Chapters 5 & 6

Question 1

what is a solvent?

Answer 1

able to dissolve other substances

Question 2

what is a solute?

Answer 2

the minor component in a solution, dissolved in the solvent.

Question 3

how do you find the percentage by mass of a solute?

Answer 3

divide the mass of the solute to the total mass of the solution then multiply 100 to get the mass solute percentage.

Question 4

how do you find/ what is the equation for the molarity?

Answer 4

divide moles of the solute by the liters of the solution

Question 5

what is dilution?

Question 6

what are the 3 dilution equations?

Answer 6

moles(initial) equals moles(final), molarity multiplied by volume equals moles, mols/liters multiplied by liters

Question 7

what is a chemical reaction?

Answer 7

is a chemical change

Question 8

what is a reactant?

Answer 8

a substance that we start with that undergoes a change

Question 9

what is a product?

Answer 9

a new substance that forms during the reaction

Question 10

what are some physical clues of a chemical reaction?

Answer 10

change in color, production of light, formation of a solid, formation of gas, absorption or release of heat

Question 11

what is a balanced equation?

Answer 11

the number of atoms of each element is the same in the products as the reactants.

Question 12

what type of reaction is this? NH4CH(s) ——> NH3(g) + HCl(g)

Answer 12

decomposition reaction

Question 13

what type of reaction is this?
Zn(s) +Cl2(g) —–> ZnCl2(s)

Answer 13

Combination reaction

Question 14

what type of reaction is this?
H2(g)+ CO(g) —–> H2CO(g)

Answer 14

Combination reaction

Question 15

What type of reaction is this?
Zn(s)+ CuCl2(aq)—-> Cu(s) +ZnCl2(aq)

Answer 15

Single displacement

Question 16

what type of reaction is this?
AgNO3(aq) +KCl(aq)——–> AgCl (s) +KNO3(aq)

Answer 16

double displacement

Question 17

what kind of reaction is this?2CO(g) + O2(g) —> 2CO2(g)

Answer 17

combustion reaction

Question 18

Al(s) + Br2(l) —–>

Answer 18

2Al(s) + 3Br2(l) —> 2AlBr3(s)

Question 19

Pb(NO3)2(aq) + KI(aq) —-> ???

Answer 19

Pb(NO3)2(aq) + 2KI(aq) —>
PbI2(s) + 2KNO3(aq)

Question 20

HCl(aq) + Mg(OH)2(s) ——> ?

Answer 20

2HCl(aq) + Mg(OH)2(s) —> MgCl2(aq) + 2H2O(l)

Question 21

What is the net ionic equation for the reaction of KCl(aq) and NaNO3(aq)?

Answer 21

No Reaction

Question 22

. AlF3(aq) + 3H2O(l) —–> Al(OH)3(s) + 3HF(aq)