Chemistry
Chemical reactions, stoichiometry, molecular structures, and element properties.
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when atoms form compounds the properties of compound are the same as pr…
A. False
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in a covalent bonds, valence electrons are gained/lost, and they are sh…
False
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covalent bonds form between a __ & __, and ionic bonds form between a _…
B. nonmetal & nonmetal, metal & nonmetal
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atoms react to become____! stable! mixed! active! a group!
A. stable!
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all elements on the periodic table are reactive, except for group __ wh…
18, 8
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valence electrons are... electrons in the outermost energy level electr…
D. All of the above
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an electron dot diagram displays.. 19 the number of protons present in …
A symbol, and dots representing valence electrons.
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in an atom, the nucleus contains____, while the energy levels hold____.
protons and neutrons; electrons
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a column on the periodic table is called ____, and a row on the periodi…
A column on the periodic table is called a group (or family), and a row on the periodic table is called a period.
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10. identify the creator of the following atomic model * j.j. thomson e…
John Dalton
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identify the following statements or words that makes \a\ correct an a.…
A. electron configuration, B. atom, C. energy levels, D. ground state
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120 ml to l 0.120 l 0.0120 l 120 l 1200 l
\(0.120L\)
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read shakespeares \sonnet 100.\ what is the rhyme scheme of the second …
abab
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the chemist mixesd 175 mg of sodium chloride with water. change milligr…
\(0.175\) grams
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chemical and physical properties of matter - exit ticket word bank - ch…
- **Part A**: - 1. Physical Property - 2. Chemical Property - **Part B**: - Length: Physical Property - Toxicity: Chemical Property - Temperature: Physical Property - pH: Chemical…
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with that reflection gortsby rose to go; as he did so an exclamation of…
It indicates in which time of year the story takes place.
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an atom has been reduced when it: pushes electrons shares electrons los…
gains electrons
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oxidation - reduction reactions are a new discovery in chemical reactio…
False
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in a peroxide, oxygen has an oxidation number of: 1 -2 0 -1
-1
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read shakespeares \sonnet 19.\ which features make this an example of a…
the abab, cdcd, efef, gg rhyme scheme; the use of three quatrains followed by a couplet; the fact that the final lines summarize the preceding lines
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25. a gas in a rigid container is heated. which process best describes …
25. Isochoric process because volume is constant. 26. The average kinetic energy per molecule and collision frequency. 27. Both A and C are correct.
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what was the main conclusion j.j. thomson drew from his cathode ray tub…
- For J.J. Thomson's conclusion: Atoms contain negatively charged particles, which he called electrons. - For Rutherford's experiment: A small fraction of the alpha particles were…
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19. a gas undergoes a process where pv = constant. what type of process…
Isothermal process; temperature remains constant # 20.
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a scientist is conducting an experiment similar to rutherfords, aiming …
- First Question: The particles being deflected away from a central point. - Second Question: Atoms are not the fundamental, indivisible particles that Dalton had proposed. - Thir…
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the four states of matter are solid, liquid, gas, and
plasma
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select the two products of the double replacement reaction below? $(nh_…
A. \(CaSO_4(s)\), C. \(NH_4NO_3(aq)\)
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select the two products of the double replacement reaction below? zn(no…
B. \(Zn_3(PO_4)_2(s)\), D. \(LiNO_3(aq)\)
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select the two products of the double replacement reaction below? pb(cl…
B. \(Ba(ClO_{3})_{2}(aq)\), C. \(PbCl_{2}(s)\)
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2 multiple answer 1 point select the two products of the double replace…
B. sodium acetate(aq), C. cobalt(II) hydroxide(s)
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actice 5 ch each type of y transformation the step in e machine. chemic…
1. Chemical to thermal 2. Chemical to mechanical 3. Mechanical to electrical 4. Mechanical to mechanical 5. Mechanical to chemical 6. Mechanical to mechanical 7. Mechanical to ele…
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exit ticket: double replacement rxns 1 multiple answer 1 point select t…
C. strontium carbonate(s), D. potassium nitrate(aq)
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2. what is the primary function of the urinary system? regulate the bod…
Remove waste products of metabolism
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arrange the transformations in the correct order. 1. light the match to…
1. Light the match to start the candle. 2. The candle burns the string into two pieces, releasing the ball that was being held in place. 3. The ball rolls down the ramp and hits t…
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which two processes form a liquid? a sublimation; evaporation b evapora…
C. melting; condensation
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what is the process by which matter changes from a gas to a solid? a de…
A. deposition
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which process does not involve matter in the liquid state? a condensati…
B. sublimation
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the reverse of the process of sublimation is called a vaporization. b d…
B. deposition
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what is the process in which a solid changes directly to a gas called?
Sublimation
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what is the reverse of the process of sublimation? a evaporation b depo…
B. deposition
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read the excerpt from a speech on the benefits of eating organic versus…
“chemicals”, “obesity”, “disease”
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compounds (page 40) 10. what is a compound? 11. circle the letter of ea…
10. A compound is a substance formed when two or more elements chemically combine in a fixed proportion. 11. a. True; b. True; d. True 12. Because the substances in a mixture are …
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match the type of energy to its description. electrical energy a type o…
- Electrical Energy: A type of energy involving charged particles - Mechanical Energy: Energy of motion - Gravitational Energy: A type of energy involving an object in a high posi…
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the formula for glucose is.... a cho b chon c c6h12o6 d c12h6o12
# Explicación breve: La glucosa es un aldohexosa, lo que significa que es un azúcar simple (monómero) que contiene seis átomos de carbono, doce átomos de hidrógeno y seis átomos d…
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question 9 (1 point) name this organic compound: a) 4 - ethyl - 3 - met…
A. 4 - ethyl - 3 - methylhept - 2 - ene
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kenneth just bought a running watch that has gps technology. what does …
global positioning system
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d. calculate the volume, in liters measured at the conditions in the la…
The volume of \(12.3\space M\space HCl\) needed is approximately \(8.13\space mL\). The steps are: measure \(8.13\space mL\) of \(12.3\space M\space HCl\) with \(10.0\space mL\) g…
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name: date: block data collection sheet and analysis questions analyze …
1. \(Fe^{3+}\), \(Ag^{+}\), \(Pb^{2+}\) 2. \((CO_{3})^{2 -}\), \((OH)^{-}\), \((PO_{4})^{3 -}\) 3. \((CO_{3})^{2 -}\), \((OH)^{-}\), \((PO_{4})^{3 -}\)
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1 multiple choice 5 points which change of phase represents sublimation…
solid to gas
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a student performs an experiment to determine the volume of hydrogen ga…
a. \(n_{Mg}\approx1.48\times 10^{-3}\space mol\) b. \(n_{HCl}\approx2.96\times 10^{-3}\space mol\) c. \(P_{H_{2}} = 728\space torr\)
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8 multiple choice 2 points water cools from ( 2 ^ { circ } mathrm { c }…
The motion of the molecules decreases.
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following question(s). in class, students investigated patterns of elem…
The atoms move more quickly.
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what law states that by choosing to operate a motor vehicle, you are ag…
- First question: Implied Consent Law - Second question: All of the above
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1. **which group contains an element which is liquid at stp? a. 1 b. 2 …
1. e. 17 2. b. atomic number 3. d. Cs 4. c. Ar 5. a. I
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the image below shows the first two columns of the periodic table. whic…
C. K, Cs, Fr
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question 22 (1 point) saved an elements atomic number is identical to t…
B. protons and electrons it has
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j j thomson described the atom as having positive charges scattered thr…
B. Scientists were able to use technological advancements and labs to explore the atom more.
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which property of an element is determined by adding the number of prot…
D. atomic mass
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which element has 16 neutrons, 15 protons, and 15 electrons? a gallum b…
B. Phosphorus
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use the periodic table and observe the element with a mass of 35. if th…
A. The number of protons does not equal the number of neutrons.
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a model of a helium (he) atom is shown below which numbered part of the…
C. 4
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quiz: atoms and classification of matter part 1 matching: match the sta…
1. neutron 2. electron 3. proton 4. neutron 5. proton 6. atomic mass 7. atomic number 8. Rutherford 9. atom 10. compound 11. \(Cl\) 12. 80 13. 10 14. 15 15. aluminum
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when 0.0 mol of nh₄ (32 g mol⁻¹) and 92 g of n₂o₅ (92 g mol⁻¹) are mixe…
C 72 g
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a mixture of gases containing 0.20 mol of so₂ and 0.20 mol of o₂ in a 4…
A. \(\frac{0.3(0.0821)(298)}{4}\space atm\)
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according to the periodic table of the elements, which set of elements …
B. He, Ne, Ar
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which characteristic of an element determines its placement in the peri…
B. number of protons
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using the highlighted elements on the periodic table, select th that ar…
D. C
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how can the rate of a reaction be decreased? lowering the temperature h…
lowering the temperature
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how can the rate of a reaction be increased? having a lower concentrati…
increasing the temperature
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the image below shows the first two columns of the periodic table. whic…
C. K, Cs, Li
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the image below shows the first two columns of the periodic table. whic…
C. K, Cs, Fr
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using the periodic table, which statement is correct? a. sodium (na) ha…
A. Sodium (Na) has more protons than carbon (C)
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which statement about reaction rates is true? changing the temperature …
Changing the surface area affects the reaction rate.
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which option is an example of a chemical reaction that occurs at a very…
an explosion
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what is true of a reaction that has reached equilibrium? the rate of th…
The reaction rates of the forward and reverse reactions are equal.
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8 fill in the blank 1 point use the activity series of non - metals to …
reaction will occur
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an atom consists of a nucleus surrounded by- a neutrons. b electrons. c…
B. electrons
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7 fill in the blank 1 point use the activity series to complete the sta…
more
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6 fill in the blank 1 point use the activity series of metals to decide…
Reaction occurs.
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physical and chemical changes decide if each example is a physical or c…
1. Physical change 2. Physical change 3. Chemical change 4. Physical change 5. Chemical change 6. Physical change 7. Chemical change 8. Chemical change 9. Physical change 10. Chem…
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physical and chemical changes complete the paragraph using words from t…
Changes, chemical, appearance, cutting, transforms, vinegar, physical, original
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4 fill in the blank 1 point use the activity series to complete the sta…
more
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3 fill in the blank 1 point use the activity series of metals to decide…
no reaction
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2 fill in the blank 1 point use the activity series of metals to decide…
no reaction
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progress check: activity series 1 fill in the blank 1 point use the act…
less
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8 multiple choice 2 points in a closed system, the total mass before an…
Equal
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multiple choice 2 points if 10g of reactants produce 10g of products, w…
Law of conservation of mass
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5 multiple choice 2 points how many hydrogen atoms are in (nh₄)₂o? 10 8…
8
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4 multiple choice 2 points which statement best describes the law of co…
Mass is conserved; it remains constant.
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3 multiple choice 2 points what happens to the rate of reaction when te…
It increases
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2 multiple choice 2 points which of the following increases the rate of…
Increasing the temperature
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1 multiple choice 2 points how many total atoms are in one molecule of …
3
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a pure substance made of only one kind of atom mixture atomic number el…
element
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a mixture in which substances are evenly distributed throughout the mix…
homogeneous mixture
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farmers need to make many decisions about how they grow their crops. on…
A. synthetic fertilizer can provide more targeted macronutrients to the crops
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single replacement reaction worksheet for each reaction use the activit…
1. no reaction 2. \(Zn + 2AgNO_3=Zn(NO_3)_2 + 2Ag\) 3. \(Cl_2 + 2KI = 2KCl+I_2\) 4. no reaction 5. \(Fe + Pb(NO_3)_2=Fe(NO_3)_2 + Pb\) 6. no reaction 7. \(2Al+3Pb(NO_3)_2 = 2Al(NO…
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¿esta es una disposición de partículas de qué estado de la materia? *
Estado gaseoso
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¿esta es una disposición de partículas de qué estado de la materia? * s…
Gas
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¿esta es una disposición de partículas de qué estado de la materia?*
Sólido
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¿esta es una disposición de partículas de qué estado de la materia?*
Estado líquido
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¿por qué las reacciones endotérmicas se sienten frías?*absorben calor d…
- Primera pregunta: A. Absorben calor del ambiente. - Segunda pregunta: B. Se mueven más rápido, lo que les permite convertirse en vapor.