Topic #5 (5.1 & 5.2) Quiz

The smallest building block of an element. Makes up everything around us-

• molecule
• atom
• particle

The positively charged particle inside the nucleus of an atom.

• electron
• neutron
• proton

A small particle in the nucleus with a neutral, or no, electrical charge.

• neutron
• electron
• proton

The middle/center part of an atom where you can find protons and neutrons.

• nucleus
• electron cloud
• atomic number

The number of protons in the nucleus of an atom.

• isotope

• Mass number/atomic mass

• Atomic number

The number of protons and neutrons added together.

• Atomic mass/

  mass number

• Atomic number
• isotope

An idea that can be tested or proven. Explains why something happens.

• theory
• isotope

• atomic mass/mass number

The area around the nucleus where electrons are located.

• electron cloud
• electron atmosphere
• electron shell

The negatively charged particle outside of the nucleus of an atom.

• electron
• neutron
• proton

On a periodic table, the GROUPS are in-

• Vertical columns
• Diagonal lines
• Horizontal rows