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Types of bonds and chemical reactions revision Quiz#1

Total questions: 50

Worksheet time: 34mins

Name
Class
Date
1.

Is H2O2 an element or a compound?

a)

element

b)

compound

2.

An atom that gains or loses an electron becomes

a)

an isotope

b)

a new element

c)

an ion

d)

a molecule

3.

When an atom gains an electron it becomes

a)

negatively charged

b)

positively charged

c)

neurtal

4.

Ionic bonds happen when valence electrons are

a)

shared

b)

too heavy

c)

transferred

5.

Valence electrons are

a)

neutral (no charge)

b)

found in the outer most energy level of the atom

c)

equal to the number of protons

6.

Which type of bonds create compounds?

a)

covalent bonds

b)

ionic bonds

c)

metallic bonds

d)

all type of bonds

7.

Which type of bond occurs between non metals?

a)

covalent bonds

b)

ionic bonds

c)

metallic bonds

d)

all types of bonds

8.

How many valence electrons does Oxygen have?

a)

0

b)

16

c)

6

d)

8

9.

How many different elements are in the C6H12O6

a)

3

b)

6

c)

12

d)

24

10.

How many total atoms are in C6H1206

a)

3

b)

6

c)

12

d)

24

11.

What type of bond forms CaF2

a)

covalent bond

b)

ionic bond

c)

metallic bond

d)

all answers are correct

12.

Which type of bond is creates MgFe?

a)

covalent bond

b)

ionic bond

c)

metallic bond

d)

all the bonds

13.

What is the charge of an aluminum ion that has 13 protons and 10 electrons?

a)

3+

b)

3 -

c)

no charge

14.

Is this equation balanced? C3H8 + 5O2 → 4H2O + 3CO2

a)

yes

b)

no

15.

How many oxygen atoms on each side of C3H8 + 5O2 → 4H2O + 3CO2

a)

2

b)

3

c)

5

d)

10

16.

In order for a chemical reaction to occur,

a)

there must be an explosion or fire

b)

bubbling or gas must be produced

c)

a new substance must be formed

d)

the substance must turn color

17.

After a chemical reaction occurs, atoms are not created nor destroyed,

a)

just rearranged into a new substance

b)

just changed into different elements

c)

just turned into unstable elements

18.

Most elements bond to create compounds because

a)

their outer electron level is full

b)

they are unstable

c)

they are positively charged

19.

Compounds that share specific valence electrons are formed by

a)

covalent bonds

b)

ionic bonds

c)

metallic bonds

d)

all types of bonds

20.

Compounds or elements that share their pooled valence electrons are

a)

covalent bonds

b)

ionic bonds

c)

metallic bonds

d)

all types of bonds

21.
Combining substances to form a new substance
a)
Displacement
b)
Synthesis
c)
Decomposition
d)
Oxidation
22.
Breaking down a substance into simpler substances
a)
Displacement
b)
Synthesis
c)
Decomposition
d)
Oxidation
23.
Combining a substance with oxygen
a)
Displacement
b)
Synthesis
c)
Decomposition
d)
Oxidation
24.
Switching one substance for another
a)
Displacement
b)
Synthesis
c)
Decomposition
d)
Oxidation
25.
Having to do with heat
a)
Displacement
b)
Synthesis
c)
Decomposition
d)
Thermic
26.
What type of reaction is the equation C + O2 → CO2?
a)
Synthesis Reaction
b)
Decomposition Reaction
c)
Single Displacement Reaction
d)
Double Displacement Reaction
27.
What type of reaction is the equation 2NaCl →2Na +Cl2?
a)
Synthesis Reaction
b)
Decomposition Reaction
c)
Single Displacement Reaction
d)
Double Displacement Reaction
28.
Cu + 2Ag(NO3) → 2Ag + Cu(NO3)
a)
Synthesis Reaction
b)
Decomposition Reaction
c)
Single Displacement Reaction
d)
Double Displacement Reaction
29.

Ca3(PO4)2 + 3 H2SO4 → 3 CaSO4 + 2 H3(PO4)

a)
Synthesis Reaction
b)
Decomposition Reaction
c)
Single Displacement Reaction
d)
Double Displacement Reaction
30.
Which of the following is an example of a chemical change?
a)
melting a stick of butter
b)
dissolving salt in water
c)
using magnesium to displace hydrogen gas from water
31.
Consider the chemical equation CH4 + 2 O2 → CO2 + 2 H2O. In this equation, CH4 is a
a)
product
b)
reactant
c)
displacement
32.
Consider the equation 4 Fe+3 O2 → 2 Fe2O3 . In this equation, 3 O2 is a
a)
product
b)
reactant
c)
compound
33.
Which of the following is an example of a physical change to matter?
a)
rusting
b)
digestion
c)
freezing
34.
Photosynthesis is a chemical reaction that involves the production of glucose (sugar) from carbon dioxide and water in the presence of sunlight. Photosynthesis is what kind of reaction?
a)
Exothermic
b)
Endothermic
c)
Decomposition
35.
During an endothermic reaction, what happens to energy in relation to the surroundings?
a)
released to
b)
absorbed from
c)
 mixed with
36.
During an exothermic reaction, what happens to energy in relation to the surroundings?
a)
released to
b)
absorbed from
c)
 mixed with
37.
In a cold pack, which type of reaction draws heat from the surroundings?
a)
exothermic
b)
endothermic
c)
exergonic
38.
Which generalized equation represents a synthesis reaction?
a)
A + BC → AC+ B
b)
A + B → AB
c)
AB → A + B
39.
Which generalized equation represents a decomposition reaction?
a)
A + BC → AC+ B
b)
A + B → AB
c)
AB → A + B
40.
Which generalized equation represents a single displacement reaction?
a)
A + BC → AC+ B
b)
A + B → AB
c)
AB → A + B
41.

What does the Law of Conservation of Mass say? It says,


"During a chemical reaction, mass is neither _______ or destroyed."

a)

burned

b)

created

c)

melted

42.

The substances that go into a reaction are called the _______.

a)

products

b)

reactants

43.

So, the Law of Conservation of Mass would tell us that the mass of all the REACTANTS must __________ the mass of all PRODUCTS in a chemical reaction.

a)

equal

b)

be greater than

c)

be less than

44.

An ENDOTHERMIC reaction would feel ______ to the touch, while an EXOTHERMIC reaction would feel ______ to the touch.

a)

hot ; cold

b)

cold ; hot

45.

Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe

a)

yes

b)

no

46.

Balance this equation

_Al +_HCl --> _H2 +_AlCl3

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

47.

The coefficient in 3H2O is

a)

6

b)

5

c)

2

d)

3

48.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
49.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
50.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information

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