Physical Science Semester 1 Exam

Front

What is an atom's nucleus made of?

Back

Protons and neutrons.

Front

Which particles determine the ATOMIC NUMBER of an element?

Back

Protons only.

Front

What is the summary at the end of an experiment that explains the results?

Back

Conclusion.

Front

What is a hypothesis?

Back

A hypothesis is an educated guess.

Front

Find the density of a 2 cm x 2 cm x 2 cm cube with a mass of 64 g. (Hint: find the volume first!)

Back

8 g/cm³.

Front

What is the basic unit of matter?

Back

Atom.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the formula for density?

Back

Density = Mass/Volume.