Atoms Molecules Elements Compounds

When two or more atoms combine, a _ forms.

Tags

NGSS.MS-PS1-1

What is a compound?

• A molecule that is formed from two different elements/atoms.

• A molecule that is formed from two or more of the same element/atom.

• A tiny atom that makes up an atom.

• The center of an atom that is formed by neutrons. protons, and electrons.

Tags

NGSS.MS-PS1-1

What is the Periodic Table?

• A chart that shows all the elements scientists have discovered/created.

• A chart that lists all the molecules that exist in the universe.

• A chart that tells who discovered each element.

• A chart that lists all the molecules found in nature.

What is at the center of every atom?

• nuclear

• nucleus

• electron

• molecule

Tags

NGSS.MS-PS1-1

_ and _ make up the nucleus of an atom.

Tags

NGSS.MS-PS1-1

An electron of an atom...

• lives inside the nucleus and has a neutral charge.

• circles the nucleus and has a positive charge.

• lives inside the nucleus and has a negative charge.

• circles the nucleus and has a negative charge.

The number of protons in an atom is equal to the number of _ .

The number of _ determines the type of element an atom makes.

Which of the following cannot be broken down into something simpler?

• a compound

• an element

• a chemical formula

• a mixture

A _ is like a recipe because it tells which elements make up a molecule.

Tags

NGSS.MS-PS1-1