Physical Science Exam Study Guide

Which of the following is an ionic compound (a metal + a nonmetal)?

• CO2

• KBr

• CH4

• NH3

Which of the following is a covalent compound (two nonmetals)

• KCl

• NaCl

• NaF

• H20

Tags

NGSS.MS-PS1-1

How many valence electrons are in Oxygen- atomic number 8

• 1

• 2

• 4

• 6

How many electrons are there in Aluminum- atomic number 13

• 13

• 14

• 3

• 6

Tags

NGSS.MS-PS1-1

_________ electrons are the outmost electrons of an atom that are involved in chemical bonding.

• valence

• outermost

• charged

• negative

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A metal and a non-metal form a ________ compound

• ionic

• covalent

• simple

• metallic

Two non-metals will form a ________ compound

• ionic

• covalent

• simple

• metallic

Protons have a _______ charge

• positive

• neutral

• negative

• non-existent

Electrons have a _________ charge

• positive

• neutral

• negative

• non-existent

Tags

NGSS.MS-PS2-3

Neutrons have a _______ charge

• positive

• neutral

• negative

• non-existent