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Potions Chemical Reactions

Total questions: 20

Worksheet time: 11mins

Name
Class
Date
1.

Which two would be definite signs that a chemical reaction occurred. Select two

a)

color change

b)

bubbles

c)

new substance formed

d)

precipitate forms when two liquids are mixed

2.

Which type of reactions are almost always endothermic

a)

combustion

b)

decomposition

c)

double replacement

d)

hydrolysis

3.

Which types of reaction is a reduction-oxidation (Redox) reaction.

a)

precipitate reaction

b)

single displacement reaction

c)

neutralization reaction

d)

hydrolysis

4.

Which is true or an redox reaction?

a)

Oxygen is one of the products

b)

Oxygen is one of the reactants

c)

The products either gain (forms anion) or lose (form cation) an electron

d)

Acids are formed

5.

What forms in a single replacement reaction, if the single element (A) is a metal?

a)

cation (+ ion)

b)

anion (- ion)

6.

What forms in a single replacement reaction, if the single element (A) is a non-metal?

a)

cation (+ ion)

b)

anion (- ion)

7.

pH stands for what?

a)

power of Hydrogen

b)

pro Hydrogen

c)

potential Hydrogen

8.

In a neutralization reaction, what forms?

a)

CO2 and H2O

b)

Acid and Base

c)

Salt and H2)

d)

Anion and Cation

9.

What is the term used for a synthesis reaction where 2 molecules combine to form H2O as one of the products

a)

Hydrolysis

b)

Decomposition

c)

Electrolysis

d)

Condensation

10.

What is required for a combustion reaction? Select all that apply

a)

Fuel

b)

Heat

c)

Carbon

d)

Oxygen

11.

Which reaction typically occurs with two ionic compounds as reactants

a)

neutralization

b)

precipitation

c)

condensation

d)

combustion

12.

Which 2 compounds would likely form a precipitate based on solubility rules? Select 2!

a)

NaPO4

b)

ClO4

c)

CaCO3

d)

MgOH

13.

Acids form what type of gas when react with Metals?

a)

CO2

b)

OH

c)

H2

d)

O2

14.

Acid forms what gas when reacts with carbonates

a)

H2

b)

CO2

c)

O2

d)

OH

15.

What do pH indicators react to that causes color change for bases?

a)

OH+ ions

b)

H+ ions

c)

Metals

d)

OH- ions

16.

Which is NOT strong alkaline?

a)

NaOH

b)

KOH

c)

Ba(OH)2

d)

NHO3

17.

What forms when bases react with carbonates

a)

OH

b)

CO2

c)

O2

d)

Bases do not react to carbonates

18.

The inputs of a chemical reaction on the left side of the equation are called

a)

reactants

b)

products

c)

ingredients

d)

compounds

19.

electrolysis is this type of reaction

a)

synthesis

b)

decomposition

c)

hydrolytic

d)

single replacement

20.

the term for the number that shows how many atoms of an element are in a molecule or compound

a)

ion

b)

superscript

c)

subscript

d)

coefficient