Chemistry Year Review

Matter/Periodic Table

100

State of matter with no definite shape or volume

What is a gas?

200

Calcium is in this group.

What are the alkaline earth metals?

300

Represents the number of protons in an element.

What is the atomic number?

400

The formula for density.

What is density = mass/volume

500

the melting of ice is  a _________ change.

What is physical change?

Atomic Theory

100

Contains neutrons and protons.

What is the nucleus?

200

Concluded that atoms were mostly empty space.

Who is rutherford?

300

Has same number of protons but different number of neutrons.

What is an isotope?

400

The smallest unit of matter that can stand on its own.

What is the atom?

500

The mass number of an element with 8 protons and 10 neutrons

What is 18

Electrons/Moles

100

Cl^-1 has __________ electrons

What is 18

200

Outer orbital electrons

What are valence electrons

300

1s² 2s² 2p³ 

What is nitrogen

400

6.022x10²³

What is a mole of a substance, or Avogadro's number

500

5.5 moles of oxygen is ____________ grams.

What is 88 grams of oxygen

Chemical Formulas and Reactions

100

KBr is a(n) _______________ compound

What is an ionic compound?

200

The substance that must be a reactant in a combustion reaction for it to occur.

What is oxygen?

300

HCl + NaOH --> NaCl + Water

What is double replacement reaction or neutralization reaction?

400

Name N₃I₅

What is trinitrogen pentiodide

500

Formula for Barium hydroxide.

What is Ba(OH)₂

Acids/Bases

100

pH of 2

What is an acid

200

1x10¹¹ hydrogen ions has a pH of ___________

What is a pH of 11

300

Has a neutral pH

What is water?

400

Tastes sour.

What is an acid

500

Feels slippery

What is a base