Rates,types,balancing Reactions

Question 0

What is a physical change

Answer 0

A characteristic of matter that you can observe or measure without changing the identity of the matter (changing the states of matter)

Question 1

Chemichal change is..

Answer 1

A change in matter in which the substances thY make up the matter change into other substances with different chemical and physical properties. (Foaming, fizzing, temperature changes,colors changes, fire)

Question 2

What’s an endothermic reaction

Answer 2

Chemical reaction that absorb thermal energy

Question 3

What’s an exothermic reaction?

Answer 3

Chemical reaction that release thermal energy.

Question 4

What is a catalyst

Answer 4

Substances that increase the reaction rate

Question 5

What is an Inhibitor

Answer 5

Substances that decrease the reaction rate

Question 6

What increases reaction rate

Answer 6

Surface area, concentration/pressure, temperature

Question 7

What is synthesis

Answer 7

Two or more substances combine to form a new compound

Ca+O–CaO

Question 8

What is decomposition

Answer 8

One compound breaks down and forms and forms two or more substances

AlCl—Al+ Cl

Question 9

What is combustion

Answer 9

A chemical reaction in which a substance combines oxygen and releases energy

Question 10

What is a single replacement

Answer 10

One element replaces another element in a compound

Question 11

What is a double replacement

Answer 11

Two or more substances switch, forming a new compound