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WorksheetsChemistry Test Prep
Total questions: 41
Worksheet time: 25mins
Name
Class
Date
1.
Baking a cake by mixing flour, sugar, chocolate powder, eggs, and milk, and then heating them in the oven.
a)
Chemical Change
b)
Physical Change
2.
A change in which NEW substances are formed.
a)
Chemical change
b)
Physical change
c)
Casual change
d)
Formal change
3.
Which of the following is NOT an example of chemical change?
a)
sour milk
b)
burning wood
c)
breaking a pencil
d)
rust
4.
Which type of property is the ability to conduct electricity?
a)
physical property
b)
chemical property
5.
What kind of properties can only be observed when a substance changes into a different substance (atom link up changed)?
a)
physical properties
b)
chemical properties
c)
liquid properties
d)
real properties
6.
What characteristic defines all chemical changes?
a)
There is a change of state.
b)
Electricity is produced.
c)
Atom link up has changed (new substance is formed)
d)
Bubbles are produced.
7.
Which is the name of the kind of solid substance formed in this figure?
a)
aqueous
b)
precipitate
c)
acid
d)
synthesis
8.
How many F atoms are in this compound?
6MgF2
6MgF2
a)
2
b)
6
c)
8
d)
12
9.
How many Al atoms are in this compound? 4Al2O3
a)
2
b)
8
c)
6
d)
4
10.
___________________ are the elements are compounds that are on the right side of a chemical
reaction.
reaction.
a)
Polymers
b)
Bonds
c)
Reactants
d)
Products
11.
Does this chemical equation follow the Law of Conservation of Matter?
a)
Yes
b)
No
12.
In this chemical equation, which is one of the products?
a)
CO2
b)
C3H8
c)
O2
d)
None are correct
13.
In this chemical equation, which is one of the reactants?
a)
H2O
b)
CO2
c)
O2
d)
All are correct
14.
Is this balanced?
Al + O2 → 2Al2O3
Al + O2 → 2Al2O3
a)
Yes
b)
No
15.
Is this balanced?
2HgO → 2Hg + O2
2HgO → 2Hg + O2
a)
Yes
b)
No
16.
What is the right part of a chemical equation called?
H2 + O → H2O
H2 + O → H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
17.
What is the left part of a chemical equation called?
H2 + O → H2O
H2 + O → H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
18.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
d)
1
19.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
20.
The smallest part of an element that can be identified as that element is
a)
a nucleus.
b)
an atom
c)
a proton.
d)
a neutron
21.
Carbon cannot be broken down into anything simpler by chemical means, so carbon must be
a)
a mixture
b)
a compound
c)
a proton
d)
an element.
22.
What is made up of only one type of atom, and is identified on the periodic table by the atomic number?
a)
compound
b)
element
c)
molecule
d)
substance
23.
Which is true about a compound?
a)
2+ elements
b)
Elements that are combined to make something new
c)
Elements that are chemically combined
d)
All answer chioices are correct
24.
Which of the following is a compound?
a)
Fe
b)
CH4
c)
C
d)
Cl
25.
A gold ring and a gold bar have the same chemical properties.
a)
True
b)
False
26.
Water freezing into ice is a ___________________ change.
a)
chemical
b)
physical
27.
Is a a rusting bicycle a chemical or physical change?
a)
chemcial
b)
physical
28.
Density is a _____________property.
a)
chemical
b)
physical
29.
When a new substance is formed the __________________ change.
a)
Masses
b)
Properties
c)
None of these
d)
Both of these
30.
Items in the same ___________ have similar properties.
a)
group
b)
period
31.
The number in front of a compound or element is a
a)
Subscript
b)
Coefficient
c)
Superscript
d)
Charge
32.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
33.
The number of atoms of N (nitrogen) in 3N2O5 is
a)
5
b)
2
c)
6
d)
15
34.
Evidence of a chemical reaction include:
a)
Phase change
b)
No new substance
c)
Bubbles forming
d)
Shape change
35.
Evidence of a chemical change does NOT include:
a)
New substances
b)
Heat produced
c)
Phase change
d)
Light produced
36.
How is a physical change different from a chemical change?
a)
There is absolutely no difference
b)
Chemical changes produce a new substance, physical changes stay the same substance
c)
Chemical changes create and destroy matter, physical changes don't
d)
Physical changes create and destroy matter, chemical changes dont
37.
What will weigh more when a chemical change is complete? The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
38.
Can matter be created or destroyed?
a)
Yes, it can be created.
b)
Yes, it can be destroyed.
c)
No, matter is always conserved
d)
None of these
39.
Balance this equation-
__P4 + __O2 --> __P2O3
__P4 + __O2 --> __P2O3
a)
it is already balanced
b)
2, 1, 3
c)
1, 2, 3
d)
1, 3, 2
40.
Ca + O2 --> CaO
What coefficient goes in front of CaO?
What coefficient goes in front of CaO?
a)
1
b)
2
c)
3
d)
4
41.
Cu2O + C --> Cu + CO2
What coefficient goes in front of Cu?
What coefficient goes in front of Cu?
a)
1
b)
2
c)
3
d)
4
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