NEW
Font size
S
M
L
XL
WorksheetsChemistry Test 2
Total questions: 57
Worksheet time: 57mins
Name
Class
Date
1.
A substance that undergoes a(n) _____ change becomes a new kind of substance.
a)
large
b)
physical
c)
chemical
d)
state of matter
2.
A physical property can be observed by _________________.
a)
burning the substance
b)
changing the chemical identity of a substance
c)
using the senses
d)
placing the substance in acid
3.
Signs that a chemical change has occurred include
a)
a change in color
b)
the release of bubbles
c)
the production of a solid
d)
all of the above
4.
The substances on the left of the yields arrow that start a chemical reaction are called _____.
a)
reactants
b)
products
c)
reactors
d)
ingredients
5.
The substances on the right side of the yields arrow that are produced in a chemical reaction are called _____.
a)
reactants
b)
products
c)
reactors
d)
ingredients
6.
A chemical reaction like 2H2 + O2 --> 2H2O is represented by a chemical _____.
a)
math problem
b)
equation
c)
recipe
d)
explosion
7.
Chemical equations must be balanced because they describe how chemical reactions obey the principle of __________.
a)
activation
b)
decomposition
c)
mass coefficients
d)
conservation of mass
8.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
9.
Which range of numbers represent basic solution?
a)
0-6
b)
7
c)
8-14
d)
3-9
10.
The Color RED represents which pH?
a)
Acid
b)
Base
11.
A solution with a pH of 7 is________
a)
increasing
b)
neutral
c)
decreasing
d)
apple juice
12.
When put into a basic solution, red litmus paper ________.
a)
stays red
b)
turns blue
c)
turns magenta
d)
turns violet
13.
Which is most acidic?
a)
milk
b)
Lemon Juice
c)
bleach
14.
The esophagus is the tube that connects the mouth to the stomach. Heartburn occurs when some of the stomach juices flow backwards up the esophagus. To help relieve heartburn, a person should take medicine that is
a)
neutral
b)
basic
c)
acidic or basic.
acidic or basic.
d)
acidic
15.
If an acid is combined with a base of equal strength, the result will most likely be
a)
a neutral solution.
b)
a stronger acid.
c)
impossible to tell without testing the pH.
d)
a stronger base
16.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
17.
Which of the following statements is correct?
a)
Blue litmus paper turns red when placed in a base.
b)
Red litmus paper turns blue when placed in a base.
c)
Blue litmus paper stays blue when placed in an acid.
d)
Red litmus paper stays red when placed in a base.
18.
The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?
a)
3
b)
9
c)
7
d)
5
19.
What would be considered the weakest base?
a)
8
b)
14
c)
7.8
d)
11.6
20.
Many cleaning solutions are bases. Which of the following is a property of most bases?
a)
feels slippery
b)
white color
c)
can only be liquid
d)
tastes sour
21.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
22.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
8
c)
1
d)
2
23.
Tastes Sour
a)
Acids
b)
Bases
c)
Salts
d)
All
24.
Tastes bitter.
a)
Acids
b)
Bases
c)
Salts
d)
All
25.
Which of the following word pairs correctly completes the sentence below?
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
a)
Acids; pH less than 7
b)
Acids; pH greater than 7
c)
Bases; pH greater than 7
d)
Bases; pH less than 7
26.
What is the definition of chemical change?
a)
any change that results in the formation of new chemical substances.
b)
changing clothes
c)
matter cannot be created or destroyed, only change form
d)
changes affecting the form of a chemical substance, but not its chemical composition.
27.
Which one is the definition of chemical property?
a)
a property or characteristic of a substance that is observed during a reaction where the chemical composition of a substance is changed
b)
any change that results in the formation of new chemical substances
c)
combustibility
28.
What is the definition of physical change?
a)
any change that results in the formation of new chemical substances.
b)
rusting
c)
changes affecting the form of a chemical substance, but not its chemical composition.
d)
any property that is measurable, whose value describes a state of a physical system
29.
What is burning?
a)
physical change
b)
physical property
c)
chemical change
d)
chemical property
30.
What happens when water freezes?
a)
ice is formed; chemical property
b)
cold water is formed; physical change
c)
ice is formed; physical change
d)
cold water is formed; chemical change
31.
Melting is a chemical change
a)
true
b)
false
32.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
33.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
34.
Element or compound?
H2O
H2O
a)
element
b)
compound
35.
Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)
three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
36.
How many atoms are there TOTAL in:
H2SO4
H2SO4
a)
6
b)
5
c)
7
d)
3
37.
The red numbers in the image below represent ________
a)
subscripts
b)
coefficients
c)
I don't know, and don't want to try
d)
None of the answers are correct
38.
The blue numbers in the image below represent ________
a)
I don't know, and don't want to try
b)
coefficients
c)
subscripts
d)
none of the answers are correct
39.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
40.
Why is the following chemical equation not balanced?
H2 + O2 --> H2O
H2 + O2 --> H2O
a)
each side of the equation has a different number of oxygen atoms
b)
each side of the equation has a different number of hydrogen atoms
c)
each side has the same mass
41.
In a chemical reaction, everything to the right of the arrow are called ______________.
a)
products
b)
yields
c)
molecules
d)
reactants
42.
How many hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
43.
Covalent bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
44.
Ionic bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
45.
Is hydrogen considered a metal or a non-metal?
a)
A metal
b)
Nonmetal
c)
Metalloid
46.
Where are metals located on the periodic table?
a)
Blue
b)
Green
c)
Red
47.
Where are the nonmetals located on the periodic table?
a)
Blue
b)
Red
c)
Green
48.
Kerosene (C12H26) is used in oil lamps.
a)
Ionic
b)
Covalent
49.
People often use sodium bromide (NaBr) to sanitize their hot tubs.
a)
Ionic
b)
Covalent
50.
Magnesium oxide (MgO), like magnesium chloride (MgCl2), chloride, is used to maintain adequate magnesium in the body.
a)
Ionic
b)
Covalent
51.
Cow farts, which release methane (CH4), are a source of global warming.
a)
Ionic
b)
Covalent
52.
Which indicator is the most precise?
a)
pH paper
b)
phenolphthalien
c)
litmus paper
d)
phenol red
53.
This indicator turns bright pink in the presence of a base
a)
pH paper
b)
phenolphthalien
c)
red litmus paper
d)
blue litmus paper
54.
A block has a mass of 54g and a volume of 20cm3. What is the density of the block?
a)
74 g/cm3
b)
1080 g/cm3
c)
34 g/cm3
d)
2.7 g/cm3
55.
Which property of matter is determined by dividing its mass by its volume?
a)
elasticity
b)
buoyancy
c)
density
d)
viscosity
56.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup
d)
plastic bottle
57.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1,
d)
4, 3, 1, 2
Reset
