Physical Science Final Exam Review

Which of the following is an ionic compound?

• CO₂

• KBr

• CH₄

• NH₃

Which of the following is a covalent compound

• KCl

• NaCl

• NaF

• H₂0

Tags

NGSS.MS-PS1-1

How many valence electrons does silicon have?

• 1

• 2

• 3

• 4

How many electrons does potassium have?

• 15

• 19

• 20

• 39

Tags

NGSS.MS-PS1-1

__________ electrons are the electrons found in the outermost energy level of an atom and are responsible for chemical bonding

• inner electrons

• all electrons

• negative electrons

• valence electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A metal and a non-metal will form a __________ compound

• Ionic

• Covalent

• Simple

• Metallic

A covalent bond occurs between

• a metal and a non-metal

• two metals

• two non-metals

• any type of atoms

What charge do protons have?

• positive

• negative

• neutral

• non-existent

Electrons have a _________ charge

• positive

• negative

• neutral

• non-existent

Tags

NGSS.MS-PS2-3

Neutrons have a __________ charge