STAAR Science Chemistry Review

Front

The positive particles of an atom are

Back

protons

Front

An atom's overall charge is

Back

neutral

Front

If an atom has 3 electrons, how many protons does it have?

Back

3

Front

If the number of protons equal the number of _____, the atom will have no charge.

Back

electrons

Front

What is the atomic number?

Back

the number of protons or electrons

Front

mass number

Back

the number of protons and neutrons

Front

How many neutrons does the isotope of lithium have?

Back

5

Front

Number of C's in 2Na₂CO₃

Back

2

Front

How many Elements are in the compound C₂H₈O ?

Back

3

Front

How many total atoms are in the compound C₂H₈O ?

Back

11