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WorksheetsChemical Interactions
Total questions: 50
Worksheet time: 32mins
Name
Class
Date
1.
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
2.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
3.
Which of the following is an acid?
a)
shampoo
b)
baking soda
c)
orange juice
d)
water
4.
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
5.
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
6.
Which of the following does not increase the rate of dissolving a solid in a liquid?
a)
stirring the solution
b)
crushing up the solute
c)
raising the temperature of the water
d)
lowering the temperature of the water
7.
The substance being dissolved.
a)
Solute
b)
Solvent
c)
Solution
d)
Concentration
8.
The substance that dissolves the solute.
a)
Solution
b)
Solute
c)
Concentration
d)
Solvent
9.
What does it mean to dilute a solution?
a)
lower the concentration of solute per solvent
b)
increase the concentration of solute per solvent
10.
When comparing the boiling point of a solution to that of a pure solvent, the solutions boiling point is ___________.
a)
lower
b)
higher
c)
the same
11.
A mixture of one substance dissolved in another so that the properties are the same is what type of mixture?
a)
colloid
b)
alloy
c)
emulsion
d)
solution
12.
Which are different types of mixtures
a)
suspension
b)
solution
c)
colloid
d)
all the above
13.
A solution in which more solute can still be dissolved is called a
a)
Supersaturated
b)
Saturated
c)
Unsaturated
14.
mixture of two or more substances; dissolved particles are spread evenly throughout the mixture
a)
solvent
b)
solute
c)
mixture
d)
solution
15.
If a spoonful of sugar is mixed in a glass of water, what is the water called?
a)
solute
b)
solution
c)
solvent
d)
element
16.
24. Milk
a)
A. SOLUTION
b)
B. SUSPENSION
c)
C. COLLOID
17.
22. Salt water
a)
A. SOLUTION
b)
B. SUSPENSION
c)
C. COLLOID
18.
Italian dressing is a
a)
solution
b)
suspension
c)
colloid
19.
Particles in an atom that are neutral and have no charge are
a)
molecules
b)
electrons
c)
neutrons
d)
protons
20.
Particles in an atom that are negative
a)
molecules
b)
electrons
c)
neutrons
d)
protons
21.
Particles in an atom that are positive
a)
molecules
b)
electrons
c)
neutrons
d)
protons
22.
A section of the Periodic Table of Elements is provided. What is the chemical symbol for magnesium?
a)
12
b)
Mg
c)
24.31
d)
Magnesium
23.
Where are the elements that really like to donate electrons?
a)
1
b)
2
c)
3
d)
4
24.
Where are the elements that really like to attract electrons?
a)
1
b)
2
c)
3
d)
4
25.
What is a element?
a)
A substance that cannot be broken down further by chemical or physical means
b)
A group of two or more atoms that are chemically bonded
c)
Two or more substances together in the same place but not chemically bonded
d)
A substance that is not able to undergo a chemical or physical change
26.
What is a physical change?
a)
A change that alters the form or appearance of matter but does not turn any substance into a different substance
b)
A change in matter that produces one or more new substances
c)
A change that involves destroying atoms that are in the substances
27.
What is a chemical change?
a)
A change that alters the form or appearance of matter but does not turn any substance into a different substance
b)
A change in matter that produces one or more new substances
c)
A change that involves destroying atoms that are in the substances
28.
Which is an example of a chemical change?
a)
Baking a cake
b)
Melting snowman
c)
Boiling water
d)
Ripping a paper
29.
Which of the following is not a chemical change?
a)
Rusting of a nail
b)
Condensation forming
c)
Digesting food
d)
Burning a tree
30.
The smallest part of an element...
a)
atom
b)
molecule
c)
electron
31.
Anything that takes up space and has mass...
a)
Electron
b)
Atom
c)
Matter
32.
Which particles are found in an atom's nucleus?
a)
Protons
b)
Neutrons
c)
Electrons
d)
Both protons and neutrons
33.
Which particles are found in the energy rings (levels) surrounding an atom's nucleus?
a)
Protons
b)
Neutrons
c)
Electrons
d)
Both protons and electrons
34.
Which particle is equal to the Atomic Number
a)
# of electrons
b)
# of neutrons
c)
# of protons
35.
The ability of a substance to be pounded or rolled into thin sheets
a)
State
b)
Ductility
c)
Malleability
d)
Thermal Conductivity
36.
The ability of a substance to be pulled into wires
a)
Malleability
b)
Flexibility
c)
State
d)
Ductility
37.
Boiling point,melting point, and density are some of an element's
a)
pure properties
b)
physical properties
c)
chemical properties
38.
Can a mixture be separated?
a)
No
b)
Yes
c)
Only sometimes
39.
8.7: Combustion is when a __________ reacts with oxygen
a)
petrol
b)
fuel
c)
fire triangle
d)
carbon dioxide
40.
Which of these isn't in the fire triangle?
a)
Fuel
b)
Heat
c)
Oxygen
d)
Carbon dioxide
41.
What part of the fire triangle do you remove by spraying water onto a fire?
a)
Heat
b)
Oxygen
c)
Fuel
42.
What is this tool?
a)
fire hydrant
b)
smoke detector
c)
fire alarm
d)
fire exstinguisher
43.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
44.
Is this substance acidic, basic, or neutral?
a)
Acidic
b)
Basic
c)
Neutral
45.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
46.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
47.
What is the pH of a toothpaste?
a)
6
b)
7
c)
8
d)
9
48.
How many Valance electrons does Iodine Have?
a)
6
b)
16
c)
7
d)
17
49.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
50.
The noble gases (group 18) have how many valence electrons?
a)
1
b)
2
c)
7
d)
8
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