Unit B - Matter and Chemical Change

Question 1

Chemical Properties

Answer 1

How substance interact with each other

Question 2

Chemical change

Answer 2

occurs when new substance is formed

Question 3

Metal + Non metal =

Answer 3

Ionic compound

Question 4

Non metal + Non metal =

Answer 4

Molecular compound

Question 5

Multivalent

Answer 5

An ionic compound with a metal with two or more possible charges

Question 6

How to name an ionic compound

Answer 6

add __ide to the non-metal
NaCl = sodium chloride

Question 7

How to name multivalent compounds

Answer 7

use roman numerals for the amount of energy in the metal
FeO - iron (ll) oxide

Question 8

How to name molecular compounds

Answer 8

use prefix in front of the element name

Question 9

Diatomic compounds

Answer 9

two of the same atom bonded
H2 - hydrogen gas

Question 10

Endothermic

Answer 10

Cold
instant ice pack

Question 11

Exothermic

Answer 11

Hot
Fire

Question 12

____+____ —> _________
Chemical equation

Answer 12

reactant —-> products

Question 13

3 types of chemical reactions

Answer 13

Combustion
Corrosion
Cellular Respiration

Question 14

Combustion

Answer 14

Exothermic
sparks

Question 15

Corrosion

Answer 15

Exothermic
rust

Question 16

Cellular Respiration

Answer 16

Endothermic
living organisms take in energy

Question 17

Law of conservation

Answer 17

no matter is destroyed or gained in a chemical reaction

Question 18

4 things that affect rate of a chemical reaction

Answer 18

Catalyst
Change temp
change concentration
change surface area

Question 19

Catalyst

Answer 19

substance used to speed up reaction but is still apart of the product

Question 20

Enzyme

Answer 20

A catalyst that living things produce
saliva

Question 21

Change Concentration

Answer 21

Add more reactant to speed up

Question 22

Change Temp

Answer 22

Increased temp - faster
decreased temp - slower

Question 23

Change surface area

Answer 23

smaller the particle the more room for a reaction to occur