chem exam 2

Question 1

physical properties

Answer 1

characteristic of a substance which can be measured without changing the composition of the substance.

Question 2

precipitation reaction

Answer 2

when dissolved substances react to from one or more solid substance?

Question 3

Solubility

Answer 3

the extent to which a substance in water or another solvent is dissolved

Question 4

acid-base reactions

Answer 4

exchange of one or more hydrogen ions from one species to another

Question 5

acid

Answer 5

A substance that dissolves in water to yield hydronium ions.

Question 6

base

Answer 6

Substances that dissolve in water to yield hydroxide ions.

Question 7

neutralization reaction

Answer 7

acid-base reaction where the reactants are acid+base but not water producing salt and water

Question 8

reducing agent

Answer 8

species that is oxidized

Question 9

oxidizing agent

Answer 9

species that is reduced

Question 10

oxidation number

Answer 10

The charge an atom would possess if the compound were ionic.

Question 11

what is energy

Answer 11

capacity to do work or supply heat

Question 12

potential vs kinetic energy

Answer 12

The energy an object has due to its position, composition, or condition/ the energy an object possesses due to its motion.

Question 13

heat definition.

Answer 13

The transfer of thermal energy between two bodies at different temperatures

Question 14

exothermic process

Answer 14

Change that releases heat

Question 15

Endothermic process

Answer 15

change that absorbs heat

Question 16

Calorie

Answer 16

energy required to raise one gram of water by 1-degree Celsius

Question 17

Define the chemical equation.

Answer 17

The identities and relative quantities of the substances undergoing a chemical or physical reaction.

Question 18

Define Spectator ions

Answer 18

Ions appear on both the reactant and product sides of the equation.