Chemistry Atoms

A stable isotope

• are atoms with an unstable nuclei

• are atoms with stable nuclei

• is radioactive

• does not exist

Tags

NGSS.HS-PS1-8

An unstable isotope

• never breaks down

• has a stable nucleus

• is radioactive

• doesn't have radioactivity

Tags

NGSS.HS-PS1-8

The smallest building block of all matter in the universe.

• Atom

• Matter

• Proton

• Element

Tags

NGSS.MS-PS1-1

The center portion of an atom containing the protons and neutrons

• Proton

• Nucleus

• Neutron

• Electron

2 or more atoms bonded together that share electrons

• Molecule

• Oxygen

• Matter

• Element

Tags

NGSS.MS-PS1-1

Oxygen has an atomic mass of _____; this it the number of _____.

• about 16; protons and neutrons.

• 8; protons.

• about 16; neutrons.

• about 16; protons and electrons.

Tags

NGSS.MS-PS1-1

The atomic number of oxygen is

• 8

• 15.9994

• 16

• O

Tags

NGSS.MS-PS1-1

Anything that has mass and takes up space

• Atom

• Matter

• Proton

• Element

Tags

NGSS.MS-PS1-4

Positively charged atomic particles

• Proton

• Nucleus

• Neutron

• Electron

Negatively charged atomic particles that orbit the nucleus

• Proton

• Nucleus

• Neutron

• Electron