Atoms P7

It is the smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element.

• matter

• atom

• mass

• element

• proton

Tags

NGSS.MS-PS1-1

Which statement about atoms is true?

• Atoms combine to make all the substances on Earth.

• Atoms are made up of smaller particles called molecules.

• Atoms come in different sizes, but most are visible using a simple hand lens.

• Atoms combine to make larger subatomic particles.

Tags

NGSS.MS-PS1-1

Where is the element's atomic NUMBER located?

• the top

• the bottom

• the top + the bottom

• the number of protons + the number of neutrons

What are the 3 subatomic particles of an atom?

• carbon atom, proton, electron

• quarks, neutrons, protons

• nucleus, protons, electrons

• protons, neutrons, electrons

A chemist determines that the atom she is studying has eight negatively charged particles outside the nucleus. What does this indicate about the atom?

• it is very unstable

• it contains eight neutrons

• it contains eight electrons

• it is a negatively charged ataom

Tags

NGSS.MS-PS1-1

What subatomic particle(s) would be found orbiting the nucleus?

• Neutrons only
• Electrons only
• Protons and Neutrons
• Protons and Electrons

Tags

NGSS.MS-PS1-1

Which subatomic particles contribute the most to the mass of an atom?

• Protons and Neutrons

• Protons only

• Electrons only

Tags

NGSS.MS-PS1-1

Where is the element's atomic MASS located?

• at the top

• at the bottom

• the top number + the bottom number

• the number of protons + the number of neutrons

William, Abigail, and Samuel are having a debate. They are trying to figure out which part of the atom has a negative charge. Can you help them out?

• Proton

• Electron

• Neutron

How many neutrons does Sodium (Na) have?

• 11

• 23

• 12

• 22.98977

Tags

NGSS.MS-PS1-1