2) identify the following as a physical or chemical property
a) the color of a chemical
chemical property
b) the melting point of a chemical
physical property
c) ability to react with hydrochloric acid
physical property
d) does the chemical rust
physical property
3) identify the following as a physical or chemical changes
a) burning a piece of paper
chemical change
b) boiling water on the stove and seeing bubbles
physical change
c) adding hydrochloric acid to a solid metal and seeing bubbles
chemical change
protons, electrons, and neutrons
4) has a positive charge

5) has a negative charge

6) has a neutral charge

7) determines the identity (name) of the element

8) determines the mass number

9) are located in the nucleus of an atom

Question

2) identify the following as a physical or chemical property
a) the color of a chemical
chemical property
b) the melting point of a chemical
physical property
c) ability to react with hydrochloric acid
physical property
d) does the chemical rust
physical property
3) identify the following as a physical or chemical changes
a) burning a piece of paper
chemical change
b) boiling water on the stove and seeing bubbles
physical change
c) adding hydrochloric acid to a solid metal and seeing bubbles
chemical change
protons, electrons, and neutrons
4) has a positive charge

5) has a negative charge

6) has a neutral charge

7) determines the identity (name) of the element

8) determines the mass number

9) are located in the nucleus of an atom

Accepted Answer

### Problem 2a:
# Brief Explanations:
The color of a chemical is a physical property because it can be observed without changing the chemical's identity. Physical properties are characteristics that can be measured or observed without altering the substance's chemical composition.
# Answer:
physical property

### Problem 2b:
# Brief Explanations:
The melting point of a chemical is a physical property as it describes the temperature at which a substance changes state (from solid to liquid) without changing its chemical identity. Physical properties relate to a substance's state or appearance without chemical reaction.
# Answer:
physical property

### Problem 2c:
# Brief Explanations:
The ability to react with hydrochloric acid is a chemical property because it describes how a substance interacts chemically (reacts) with another substance, which involves a change in chemical composition. Chemical properties are about a substance's reactivity or ability to undergo chemical changes.
# Answer:
chemical property

### Problem 2d:
# Brief Explanations:
Whether a chemical rusts involves a chemical reaction (oxidation of iron, for example), so determining if it rusts is observing a chemical property (the ability to undergo that reaction). Rusting is a chemical change, and the ability to rust is a chemical property.
# Answer:
chemical property

### Problem 3a:
# Brief Explanations:
Burning a piece of paper is a chemical change because it involves the paper reacting with oxygen, producing new substances (like ash, smoke, CO₂), and is irreversible with a change in chemical composition.
# Answer:
chemical change

### Problem 3b:
# Brief Explanations:
Boiling water on the stove and seeing bubbles is a physical change because it's a phase change (liquid to gas) where water (H₂O) remains H₂O, just changing state. No new chemical substance is formed.
# Answer:
physical change

### Problem 3c:
# Brief Explanations:
Adding hydrochloric acid to a solid metal and seeing bubbles is a chemical change because the acid reacts with the metal (e.g., metal + acid → salt + H₂ gas), producing new substances (gas bubbles are H₂, and a salt), indicating a chemical reaction.
# Answer:
chemical change

### Problem 4:
# Brief Explanations:
Protons have a positive charge (by definition, protons are positively charged subatomic particles in the nucleus).
# Answer:
Protons

### Problem 5:
# Brief Explanations:
Electrons have a negative charge (electrons are negatively charged subatomic particles orbiting the nucleus).
# Answer:
Electrons

### Problem 6:
# Brief Explanations:
Neutrons have a neutral (no) charge (neutrons are subatomic particles in the nucleus with no electric charge).
# Answer:
Neutrons

### Problem 7:
# Brief Explanations:
Protons determine the identity (name) of an element because the number of protons (atomic number) defines the element (e.g., 6 protons = carbon, 8 protons = oxygen).
# Answer:
Protons

### Problem 8:
# Brief Explanations:
The mass number of an atom is the sum of protons and neutrons in the nucleus, so protons and neutrons determine the mass number (electrons have negligible mass).
# Answer:
Protons, Neutrons

### Problem 9:
# Brief Explanations:
Protons and neutrons are located in the nucleus of an atom (electrons are in electron clouds outside the nucleus).
# Answer:
Protons, Neutrons

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QUESTION IMAGE

Question

Explanation:

Problem 2a:

Answer:

Problem 2b: