Atoms, Molecules, Elements

Atoms are the basic building blocks of matter.

• True

• False

Tags

NGSS.MS-PS1-1

Which of the following makes up an atom?

• protons

• neutrons

• electrons

• all of these

Tags

NGSS.MS-PS1-1

The nucleus of an atom is composed of

• protons and neutrons

• protons and electrons

• neutrons and electrons

• protons, neutrons, and electrons

Tags

NGSS.MS-PS1-1

_____ tell you how many atoms there are

• subscripts

• coefficients

• molecules

• none of these

Tags

NGSS.MS-PS1-1

_____ are made up entirely of one type of atom

• elements

• molecules

• atoms

• compounds

____ are groups of two or more atoms held together by chemical bonds.

• molecules

• atoms

• elements

• compounds

Tags

NGSS.MS-PS1-1

What tells you how many of that molecule there are?

• coefficients

• subscripts

• all numbers added together

• there's always only one molecule

Tags

NGSS.MS-PS1-1

How many molecules are there in 2H(Ni₂O₂)₂?

• 2

• 4

• 8

• 1

Tags

NGSS.MS-PS1-1

How many elements are there in 3Mg₅N₂?

• 3

• 5

• 2

• 6

Tags

NGSS.MS-PS1-1

How many atoms of O are there in Na(N₂O₃)₂?

• 6

• 4

• 1

• 2

Tags

NGSS.MS-PS1-1