Jeopardy Chapter 5 Science 9

Balancing Chemical Equations Chemical Reactions Types of Reactions Rates of Reactions 100 100 100 100 200 200 200 200 300 300 300 300 400 400 400 400 500 500 500 500

What does the arrow mean yields What does the arrow mean in a chemical reaction? Row 1, Col 1

What type of reaction has the synthesis What type of reaction has the general formula A + B  AB 1,2

What are the large numbers in front of compounds called? coefficients What are the large numbers in front of compounds called? 1,3

What does “rate of reaction” The speed or time it takes for the reaction to take place. What does “rate of reaction” mean? 1,4

Which side of the equation are Right (after the arrow) Which side of the equation are the PRODUCTS? 2,1

Reaction in which two things Double replacement Reaction in which two things switch places. 2,2

State the Law of Conservation Matter (mass) cannot be created or destroyed State the Law of Conservation Of Mass 2,3

What happens to the rate of reaction if the temperature The rate goes faster (time decreases) What happens to the rate of reaction if the temperature is increased? 2,4

Reactions that release energy exothermic Reactions that release energy are called __________. 3,1

combustion CH4 + 2O2  CO2 + 2H2O 3,2

Yes, there are 4 H’s and 2 O’s on each side. Is 2H2O  2H2 + O2 balanced? 3,3

Which effervescent tablet Powder (more surface area) Which effervescent tablet dissolves fastest: whole, pieces, or powder? 3,4

elements make or break bonds releasing or taking in what? energy When chemical reactions occur, elements make or break bonds releasing or taking in what? 4,1

decomposition 2PbSO4  2PbSO3 + O2 4,2

Balance: __ S8 + __O2  __ SO2 4,3

Relate SIZE to the rate of The bigger the size, the slower the reaction. Relate SIZE to the rate of reaction. 4,4

Name three signs that a chemical reaction is taking place heat, light, gas, solid, elements change identity, color Name three signs that a chemical reaction is taking place 5,1

Single replacement 3Mg + Fe2O3  2Fe + 3MgO 5,2

__Fe + __AgNO3  __Fe(NO3)2 + __Ag Balance: __Fe + __AgNO3  __Fe(NO3)2 + __Ag 5,3

They are used to speed up or slow down reactions. What do catalysts do? 5,4