Grade 7 Chemistry - Atoms, Elements, Molecules, Periodic Table

Anything that has mass and takes up space

• Atom

• Matter

• Proton

• Element

Tags

NGSS.MS-PS1-5

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

Positively charged atomic particles

• Proton

• Nucleus

• Neutron

• Electron

Uncharged atomic particles

• Proton

• Nucleus

• Neutron

• Electron

Negatively charged atomic particles that orbit the nucleus

• Proton

• Nucleus

• Neutron

• Electron

A pure substance, composed of only one type of atom.

• Molecule

• Oxygen

• Matter

• Element

2 or more atoms bonded together that share electrons

• Molecule

• Oxygen

• Matter

• Element

Tags

NGSS.MS-PS1-1

How many H are in this molecule?

C₂H₈O

• 2

• 8

• 1

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