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Ch 10 review equations

Total questions: 45

Worksheet time: 23mins

Name
Class
Date
1.

The Stock system, a convention for naming ionic compounds that contain a metal with multiple oxidation states, uses __________.

a)

arabic numerals

b)

roman numerals

c)

coefficients

d)

none of these

2.

The reaction 2NaCl + H2SO4--> Na2SO4 + 2HCl is a __________ reaction

a)

composition

b)

decomposition

c)

single replacement

d)

double replacement

3.

Choose the type of reaction represented by the equation below.

NH3 + CO2 + H2O--> NH4(HCO3).

a)

composition

b)

decomposition

c)

single replacement

d)

double replacement

4.

Oxygen usually has an oxidation number of +2 when it forms compounds.

a)

true

b)

false

5.

The oxidation number of H in HCl is +1.

a)

true

b)

false

6.

A solid reactant or product is often followed by (s) in a chemical equation.

a)

true

b)

false

7.

A liquid reactant or product is often followed by (l) in a chemical equation.

a)

true

b)

false

8.

Catalysts are substances that change the rate of a reaction without undergoing permanent changes themselves.

a)

true

b)

false

9.

In a single replacement reaction, the less reactive substance will replace the more reactive substance.

a)

true

b)

false

10.

Which of the following is NOT evidence that a chemical reaction has occurred?

a)

a change in energy

b)

the formation of a precipitate

c)

the use of a catalyst

d)

a change in color

11.

In a chemical equation, ____ appear on the left side and _____ appear on the right side.

a)

reactants, product

b)

products, reactants

12.

In certain cases, a chemical equation need not be balanced.

a)

true

b)

false

13.

An equation may be balanced by adjusting either the coefficients or the subscripts.

a)

true

b)

false

14.

catalysts are substances that change the rate of a reaction without undergoing permanent changes themselves.

a)

true

b)

false

15.

Since platinum is at the bottom of the reactivity series, it doesn't tend to lose electrons easily and is less reactive.

a)

true

b)

false

16.

Is the following equation balanced:

Zn + S -----> ZnS

a)

yes

b)

no

17.

Is the following equation balanced?

Mg + H(NO3) ---> Mg(NO3)2 + H2

a)

yes

b)

no

18.

Is the following equation balanced?

Ca(OH)2 + H3(PO4)----> Ca3(PO4)2 + HOH

a)

yes

b)

no

19.

Is the following equation balanced?

Ca(OH)2 + (NH4)2(SO4)---> Ca(SO4) +2HOH + 2NH3

a)

yes

b)

no

20.

Which of the following is the correct name for the compound?

CaCl2

a)

calcium chlorine

b)

calcium chlorite

c)

calcium chloride

d)

calcium dichloride

21.

What is the correct name for this compound?

KBr

a)

potassium bromide

b)

potassium bromine

c)

potassium bromium

d)

potassium bromite

22.

What is the correct formula for this compound?

calcium phosphate

a)

Ca(PO4)

b)

Ca3(PO4)3

c)

Ca2(PO4)2

d)

Ca3(PO4)2

23.

What is the correct formula for this compound?

sodium fluoride

a)

SoF

b)

NaFl

c)

NaF

d)

NaFo

24.

What is the correct formula for this compound?

potassium iodide

a)

KI

b)

K2I

c)

KI2

d)

K2I2

25.

What type of equation is the following?

2Ag(NO3) + ZnCl2 ---> Zn(NO3)2 + 2AgCl

a)

composition

b)

decomposition

c)

single replacement

d)

double replacement

26.

What type of equation is the following?

H2 + Cl2 ---> 2HCl

a)

composition

b)

decomposition

c)

single replacement

d)

double replacement

27.

What type of equation is the following?

2Zn(OH)2 -----> 2Zn + 2HOH

a)

composition

b)

decomposition

c)

single replacement

d)

double replacement

28.

What type of equation is the following?

2KI + Cl2 ---- 2KCl + I2

a)

composition

b)

decomposition

c)

single replacement

d)

double replacement

29.

What type of equation is the following?

Fe(SO4) + (NH4)2S ---> (NH4)2(SO4) + FeS

a)

composition

b)

decomposition

c)

single replacement

d)

double replacement

30.

What type of equation is the following?

2Na + I2 ----> 2NaI

a)

composition

b)

decomposition

c)

single replacement

d)

double replacement

31.

Which process produces a chemical change?

a)

physical reaction

b)

chemical reaction

c)

any reaction

d)

evaporation

32.

Burning of something is called what?

a)

solidification

b)

combustion

c)

evaporation

d)

condensation

33.

Rusting of iron is a physical change.

a)

true

b)

false

34.

Change in temperature is characteristic of a physical change.

a)

true

b)

false

35.

Nitrogen reacts with oxygen to produce nitrogen oxide. In this reaction oxygen is a what?

a)

reactant

b)

product

c)

reagent

d)

enzyme

36.

Which of the following is/are chemical changes during a chemical reaction?

a)

change in color

b)

formation of a precipitate

c)

release of heat and light

d)

all of the above

37.

Which of the following is a feature of a physical change?

a)

irreversible

b)

heat being released

c)

a new substance being formed

d)

a change of state

38.

Which of the following is not a feature of a chemical change?

a)

reversible

b)

new smell

c)

color change

d)

fizzing

39.

Which of the following is an example of a physical change?

a)

making lemonade

b)

squeezing a lemon

c)

lemon rotting

d)

lemon juice tarnishing metal

40.

Which of the following is a chemical change?

a)

an ice pop melting

b)

boiling water

c)

a nail rusting

d)

chopping wood

41.

After completing an experiment, all chemical wastes should be:

a)

left at your lab stations for the next class

b)

disposed of according to your instructor's instructions

c)

dumped in the sink

d)

taken home

42.

When gathering glassware and equipment for and experiment, you should

a)

read all directions carefully to know what equipment is necessary

b)

examine all glassware to check for chips or cracks

c)

clean any glassware that appears dirty

d)

all of the above

43.

Personal eyeglasses provide as much protection as:

a)

a face shield

b)

safety glasses

c)

splashproof chemical goggles

d)

none of the above

44.

If an acid is splashed on your skin, wash at once with:

a)

soap

b)

oil

c)

weak base

d)

plenty of water

45.

Hot glass looks the same as cold glass.

a)

true

b)

false

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