Chemistry Jeopardy

Chemical calculations

100

name 2 types of chemical formulas

empirical 

molecular

200

Write the empirical formula.

A compound composed of .556 carbon and .993 hydrogen

CH₂

300

A compound with an empirical formula of C₂OH₄ and a molar mass of 88 grams per mole. What is the molecular formula of this compound?

C₄O₂H₈

400

A compound with an empirical formula of C₄H₄O and molar mass of 136 grams per mole. What is the molecular formula of this compound?

C₈H₈O₂

chemical reaction

100

what are 2 types of reactions

chemical, physical

200

What are the 4 pieces of evidence of chemical reactions?

change of color

transfer of energy/ heat

gas 

precipitation

300

melting

physical

400

conductivity

chemical

500

Name a precipitate

Ring of soap scum

2 liquids making a solid 

balancing equations

100

H₂ + O₂ = H₂O

 2H₂O

200

S₈+ O₂ = SO₃

S₈ +12O₂ = 8SO₃

300

CO₂ + H₂O = C₆H₁₂O₆ +O₂

6CO₂ + 6H₂O = C₆H₁₂O₆ + 6O₂

400

C₇H₁₆ + O₂ = CO₂ + H₂O

C₇H₁₆ + 11O₂ = 7CO₂ + 8H₂O

500

Fe₂(SO₄)₃ + KOH = K₂SO₄ + Fe(OH)₃

Fe₂(SO₄)₃ + 6KOH = 3K₂SO₄ + 2Fe(OH)₃

Matter

100

What is the law of conservation of matter?

mass is not created or destroyed.

200

What is a physical property used to separate mixtures in the process of distillation?

Boiling point

300

A sample of orange ink is separated into red and yellow color. What is the method used?

Chromatography

500

why is oxygen classified as a pure substance and air classified as a mixture?

oxygen is an element, but air is a mixture of compounds and elements