Chemistry Midterm Review (Units 1-3)

Front

What are the three particles that make up an atom?

Back

Protons, neutrons, and electrons.

Front

How do you calculate the density of an object?

Back

Density = Mass/Volume.

Front

What is the density of a rock with a mass of 14g and a volume of 2cm³?

Back

7 g/cm³.

Front

What is the noble gas shorthand electron configuration for a Sulfur atom?

Back

[Ne] 3s² 3p⁴.

Front

Which state of matter has a definite shape and volume?

Back

Solid.

Front

Which state of matter has a definite volume but no definite shape?

Back

Liquid.

Front

Which state of matter has neither a definite shape nor a definite volume?

Back

Gas.

Front

What is the correct order in which orbitals fill with electrons?

Back

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.