Atoms, The Nucleus, The Electron Cloud, and Elements

Fill in the blank: An atom is the basic building block of all _______.

• matter

• energy

• cells

• light

Tags

NGSS.MS-PS1-1

Atoms have two main parts. Which of the following is the small, heavy center of the atom?

• Electron cloud

• Nucleus

• Shell

• Proton

Atoms have two main parts. Which of the following is the large, lightweight area around the nucleus?

• Nucleus

• Electron cloud

• Shell

• Proton

The nucleus contains two types of particles. Name them.

• Protons and neutrons

• Electrons and protons

• Neutrons and electrons

• Protons and photons

Fill in the blank: Protons have a _______ charge.

• positive (+)

• negative (-)

• neutral (0)

• no

Tags

NGSS.MS-PS2-3

Fill in the blank: Neutrons have a _______ charge.

• neutral (no charge)

• positive

• negative

• double

Protons and neutrons are about the same size because they have nearly the same mass.

• True

• False

Where are electrons found in an atom?

• Nucleus

• Electron cloud

• Shell

• Proton

Fill in the blank: Electrons have a _______ charge.

• negative

• positive

• neutral

• no

Tags

NGSS.MS-PS2-3

Fill in the blank: An element is a substance that consists of only one type of _______.

• atom

• molecule

• compound

• mixture