Chemistry review

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Front

How many valence electrons does a Nitrogen atom have?

Back

5

Front

What is salt (NaCl)?

Back

Salt is a compound made of sodium (Na) and chlorine (Cl) ions.

Front

Is salt an element, compound, or mixture?

Back

Compound

Front

What is a chemical property?

Back

A chemical property is a characteristic of a substance that can only be observed during a chemical reaction.

Front

What is an example of a chemical property?

Back

The ability of iron to rust is an example of a chemical property.

Front

What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed without changing its chemical composition.

Front

What is the charge of a neutron?

Back

0

Front

What is the charge of a proton?

Back

+1

Front

What is the charge of an electron?

Back

-1