Review for the Quiz on Atoms, Molecules, and Compounds

A substance that is not mixed with any other substance is called _.

• water

• potassium chloride

• a pure substance

• an element

Pure substances include...

• mixtures

• compounds

• rocks

• water and salt

• elements

Which of these terms apply to the image shown?

(Select all that apply.)

• molecule

• atoms

• compound

• bonded together

• hydrogen

Tags

NGSS.MS-PS1-1

True or False: Most atoms are bonded to other atoms.

• True

• False

Tags

NGSS.MS-PS1-1

The two types of bonds between atoms are...

(Select 2.)

• water bonds

• covalent bonds

• ionic bonds

• matrimonial bonds

Atoms sharing electrons creates a(n) _ bond.

• ionic

• covalent

• matrimonial

• water

An atom giving another atom its electron(s) creates a(n) _ bond.

• ionic

• covalent

• matrimonial

• water

Each element on the periodic table is represented by one a one or two-letter _____________________.

• chemical formula

• chemical symbol

• atomic number

• atomic mass

1. An element’s atomic number is how many __________ are in the nucleus of its atoms.

• protons

• electrons

• neutrons

• nuclei

The name of this element is _.

• He

• helium

• 2

• 4.0026

Tags

NGSS.MS-PS1-1