Apologia Physical Science, 4th ed, Module 5

Define It

100

compounds made only of 2 elements

binary compounds

200

a chemical reaction in which a compound breaks down into two or more simpler substances

decomposition reaction

300

a chemical reaction in which a substance reacts rapidly with oxygen, often producing heat and light

combustion reaction

400

the energy stored in chemical bonds

chemical energy

500

a chemical reaction that releases heat into its environment

exothermic reaction

Define It More

100

a chemical reaction that absorbs energy from its surroundings

endothermic reaction

200

this type of reaction happens when an element in a compound is replaced by another element

single replacement reaction

300

a chemical reaction in which two compounds react and exchange positive or negative ions and produces two new ionic compounds

double replacement reaction

400

substances that undergo a chemical change

reactants

500

new substances formed as a result of a chemical change

products

Formulary Fun

100

what is the chemical formula for calcium bromide?

CaBr₂

200

Silicon (Si) and chlorine (Cl) are both nonmetals and will bond to form SiCl₄ as a covalent molecule.  What is its name?

Silicon tetrachloride

300

what is the formula for dinitrogen tetroxide?

N₂O₄

400

in the following equation, what are the reactants?

Ca + 2HCl = CaCl₂+ H₂

500

Hydrochloric acid (HCl) is added to solid sodium hydroxide (NaOH).  At the end of the reaction, salt (NaCl) is dissolved in water.  What are the products of this chemical reaction?

NaCl and H₂O

Let's React

100

What type of reaction is the following equation?

2Na + Cl₂ = 2NaCl

synthesis

synthesis reactions have 2 reactants that bond to form 1 product

200

What type of reaction is the following equation? 

C₃H6O + 4O₂ = 3CO₂ + 3H₂O + Heat

combustion

300

all combustion reactions will have this as one of their reactants?

oxygen

400

which of the following reactions is a decomposition reaction?

2SO₂ + O₂ = 2SO₃

2Ni₂O3 = 4Ni + 3O₂

2NO + O₂ =2NO₂

500

is the following reaction endothermic or exothermic?

2H₂O + energy = 2H₂ + O₂

endothermic

Chemistry Craze

100

Where does the energy come from in an exothermic reaction?

it comes from energy stored in the chemical bonds of the reactants

200

which of the following is not a polyatomic ion?

NH₄⁺

CO₂

SO₄^2-

OH^-

300

How many particles are in 1 mole of any substance?

6.02 x 10²³

400

What is Avogadro's number

6.02 x 10²³

500

Which represents more items: a mole of oxygen atoms or a mole of water molecules?

neither both are 6.02 x 10²³