Atomic Structure

What is the definition of an atom?

• The basic unit of all matter.

• The whole part of an atom.

• A positive charge.

• The four parts of an atom.

Tags

NGSS.MS-PS1-1

What are the four parts to an atom?

• Electron, neutron, proton, and nucleus.

• Compound, neutron, atom, and proton.

• Molecule, proton, electron, and neutron.

• Neutron, proton, electron, and molecule.

A proton has a ___________ charge.

• positive

• negative

• neutral

A electron has a _________ charge.

• negative

• positive

• neutral

Tags

NGSS.MS-PS2-3

True or False. A neutron has no charge at all.

• True

• False

True or False. A atom has the same number of proton and electrons.

• True

• False

True or False. A atom always has the same number of electrons, protons, and neutrons?

• False

• True

Tags

NGSS.MS-PS1-1

What is an element?

• A pure substance made from a single type of atom.

• A combination of atoms.

• A molecule and a compound added together.

• A particle used to make things up.

Tags

NGSS.MS-PS1-1

Use the picture to answer the question. How many protons are in the element sodium?

• 22.990

• 11

• 22

• 23

Tags

NGSS.MS-PS1-1

Use the picture to answer the question. How many electrons are in sodium?

• 11

• 22.990

• 22

• 23

Tags

NGSS.MS-PS1-1