Question

name vanessa kirabo
period
chemistry
atomic structure worksheet

1. name the three main subatomic particles and their respective charges:
2. identify the parts of the elements box on the periodic table using oxygen as an example below:
3. the nucleus has a ________ charge and consists of ______ and ________.
4. electrons are located in the ________ of an atom and carry a ________ charge.
5. the number of protons in one atom of an element determines the atoms ________, and the number of electrons determines the ________ of an element.
6. the atomic number tells you the number of ________ in one atom of an element. it also tells you the number of ______ in a neutral atom of that element. the atomic number gives you the \identity\ of an element as well as its location on the periodic table. no two different elements will have the ________ atomic number.
7. the mass number tells the total number of ________ and ________ in the nucleus of an atom.
8. isotopes are atoms of the ________ element with different numbers of ______, which results in different ________ numbers.
9. a positively charged ion is called a ________. in a positively charged ion, the number of electrons is ________ than the number of protons.
10. a negatively charged ion is called a ________. in a negatively charged ion, the number of electrons is ________ than the number of protons.
11. ions form because most elements want __ electrons in their valence shell; this rule is called the _________.
12. give the symbol and number of protons in one atom of:

Explanation:

1. Protons have a positive charge, neutrons are neutral, and electrons have a negative charge.
2. The top number is the atomic number, the letter is the symbol, the name is below the symbol, and the bottom number is the atomic mass.
3. The nucleus has a positive charge and consists of protons and neutrons.
4. Electrons are located in the electron cloud (or orbitals) of an atom and carry a negative charge.
5. The number of protons in one atom of an element determines the atom's atomic number, and the number of electrons determines the charge (in a neutral atom, they are equal).
6. The atomic number tells you the number of protons in one atom of an element. It also tells you the number of electrons in a neutral atom of that element. No two different elements will have the same atomic number.
7. The mass number tells the total number of protons and neutrons in the nucleus of an atom.
8. Isotopes are atoms of the same element with different numbers of neutrons, which results in different mass numbers.
9. A positively charged ion is called a cation. In a positively charged ion, the number of electrons is less than the number of protons.
10. A negatively charged ion is called an anion. In a negatively charged ion, the number of electrons is more than the number of protons.
11. Ions form because most elements want 8 (or 2 for the first shell) electrons in their valence shell; this rule is called the octet rule (or duet rule for hydrogen and helium).

12.

• Beryllium: Symbol \(Be\), Protons \(4\)
• Cobalt: Symbol \(Co\), Protons \(27\)
• Fluorine: Symbol \(F\), Protons \(9\)
• Tin: Symbol \(Sn\), Protons \(50\)
• Magnesium: Symbol \(Mg\), Protons \(12\)
• Arsenic: Symbol \(As\), Protons \(33\)
• Sulfur: Symbol \(S\), Protons \(16\)
• Gold: Symbol \(Au\), Protons \(79\)

Answer:

1.

Particle	Charge
Neutron	Neutral (0)
Electron	Negative (-1)

2.

• \(8\): Atomic number
• \(O\): Symbol
• \(Oxygen\): Name
• \(15.9994\): Atomic mass

1. Positive, protons, neutrons
2. Electron cloud (or orbitals), negative
3. Atomic number, charge (in a neutral atom, they are equal)
4. Protons, electrons, same
5. Protons, neutrons
6. Same, neutrons, mass
7. Cation, less
8. Anion, more
9. 8 (or 2 for the first shell), octet rule (or duet rule for hydrogen and helium)

12.

Element	Symbol	Protons
Cobalt	\(Co\)	\(27\)
Fluorine	\(F\)	\(9\)
Tin	\(Sn\)	\(50\)
Magnesium	\(Mg\)	\(12\)
Arsenic	\(As\)	\(33\)
Sulfur	\(S\)	\(16\)
Gold	\(Au\)	\(79\)