Physical Science Final Study Guide

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Most of the mass in an atom is made up of _____________________?

• protons and electrons
• protons and neutrons
• neutrons and electrons
• electrons and quarks

The mass number of an isotope is equal to the number of ______ in an atom.

• Protons
• Neutrons
• Protons + Neutrons
•  Electrons

Which subatomic particle determines the identity of an element?

• protons

• neutrons

• electrons

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

What element has the Atomic Number 4

• Be

• Sc

• C

• Mg

Which Element has the atomic number 7?

• C

• N

• F

• Ne

How many protons does Iron have?

• 22

• 25

• 23

• 26

How many protons does Silicon have?

• 13

• 14

• 15

• 16

How many electrons does Bromine have?

• 54

• 67

• 35

• 90