Physical Science Midterm- Part 1

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of a neutron?

Back

Neutral (No Charge)

Front

What is the charge of an electron?

Back

Negative

Front

Which subatomic particles are found in the nucleus (center) of the atom?

Back

Protons and Neutrons

Front

An atom has 8 protons. How many electrons would this atom have?

Back

8

Front

Which statement best describes a molecule?

Back

Two or more atoms chemically bonded together

Front

Using the periodic table, how many protons does boron have?

Back

5

Front

What do you need to know about an object to calculate its density?

Back

Its mass and its volume

Front

Which box has the higher density?

Back

Box B

Front

A chlorine atom has an atomic number of 17 and a mass number of 35. How many neutrons does it have?

Back

The number of neutrons is calculated by subtracting the atomic number from the mass number, which gives 35 - 17 = 18.