Vocabulary List: Atomic Composition (Grade 6)

Match the following terms with their correct definitions:

• 1-A

• A particle inside the nucleus with a positive electrical charge.

• 5-E

• The tiny, basic building block of all matter; too small to see without special tools.

• 2-B

• The very dense, tiny center of an atom where protons and neutrons are tightly held.

• 4-D

• A particle inside the nucleus that has a neutral, or no, electrical charge.

• 3-C

• A tiny particle that orbits the nucleus and has a negative electrical charge.

The tiny, basic building block of all matter; too small to see without special tools is called an _______.

• atom

• cell

• molecule

• organ

A particle inside the nucleus with a positive electrical charge is called a _______.

• proton

• neutron

• electron

• photon

A particle inside the nucleus that has a neutral, or no, electrical charge is called a _______.

• neutron

• proton

• electron

• positron

A tiny particle that orbits the nucleus and has a negative electrical charge is called an _______.

• electron

• proton

• neutron

• positron

The very dense, tiny center of an atom where protons and neutrons are tightly held is called the _______.

• nucleus

• electron cloud

• isotope

• molecule

A pure substance made of only one type of atom, like gold or oxygen, is called an _______.

• element

• compound

• mixture

• solution

Anything that takes up space and has mass, like solids, liquids, and gases, is called _______.

• matter

• energy

• light

• sound

The amount of material, or matter, an object contains; similar to weight, is called _______.

• mass

• volume

• density

• temperature

The electrical property of particles that can be positive, negative, or neutral is called _______.

• charge

• mass

• volume

• density