NEW
Font size
S
M
L
XL
WorksheetsFoundations of Chemistry
Total questions: 56
Worksheet time: 33mins
Name
Class
Date
1.
Is silicon an element, compound, or mixture?
a)
Element
b)
Compound
c)
Mixture
2.
Is pure water an element, compound or a mixture?
a)
Element
b)
Compound
c)
MIxture
3.
What type of a mixture is Coffee?
a)
Homogeneous
b)
Heterogeneous
4.
What type of mixture is air?
a)
Homogeneous
b)
Heterogeneous
5.
Tap water is a ____ mixture.
a)
homogeneous
b)
heterogeneous
6.
Vegetable Soup is a
a)
Compound
b)
Element
c)
homogeneous mixture
d)
heterogeneous mixture
7.
A substance that cannot be separated by any means is a/an
a)
element
b)
compound
c)
mixture
d)
solution
8.
A(n) __________ is a substance in which all the atoms in it are alike.
a)
acid
b)
base
c)
element
d)
compound
9.
Which chemical formula is an example of a compound?
a)
O2
b)
2Cl
c)
H2SO4
10.
Sodium chloride (NaCl) is formed in a chemical reaction between sodium (Na) and chlorine (). What is sodium chloride?
a)
element
b)
mixture
c)
compound
11.
In which state of matter will the atoms of an element be tightly packed together?
a)
Solid
b)
Liquid
c)
Gas
12.
The center of an atom is the nucleus. Te nucleus is made up of:
a)
Protons and Electrons
b)
Protons and Neutrons
c)
Eggs and Bacon
d)
Protons and Atoms
13.
Anything that takes up space and has mass is...
a)
Matter
b)
Work
c)
Power
d)
Newton's 1st Law
14.
Matter is a composition that is always the same is...
a)
Mixture
b)
Atom
c)
Matter
d)
Substance
15.
A type of substance containing atoms of two or more elements chemically bonded together is a mixture.
a)
Ture
b)
False
16.
A proton is a particle that has a _________ charge.
a)
Positive
b)
Negative
c)
Neutral
d)
All of these
17.
A neutron is a particle in the atom that has a __________ charge.
a)
Neutral
b)
Negative
c)
Positive
d)
All of these
18.
The electron cloud consists of electrons that are constantly in motion and have a positive charge.
a)
Ture
b)
False
19.
An example of a chemical formula is:
a)
NaCl
b)
He
c)
C
d)
O
20.
This represents 1 carbon element, and 2 oxygens.
a)
CO4
b)
CO3
c)
CO2
d)
HeO9
21.
Salad is an example of...
a)
a mixutre
b)
an element
c)
a compound
22.
Pure oxygen (O) is an example of...
a)
an element
b)
a mixture
c)
a compound
23.
An example of ...
a)
A mixture
b)
A compound
c)
An element
24.
sodium and potassium react violently with water
a)
physical change
b)
chemical change
25.
pancakes cook on a griddle
a)
physical change
b)
chemical change
26.
food digested in the stomach
a)
physical change
b)
chemical change
27.
tire inflated with air
a)
physical change
b)
chemical change
28.
water absorbed by a paper towel
a)
physical change
b)
chemical change
29.
ethyl alcohol boils at 79⁰C
a)
physical change
b)
chemical change
30.
water freezes at 0⁰C
a)
physical change
b)
chemical change
31.
fireworks explode
a)
physical change
b)
chemical change
32.
Alka-Seltzer gives off carbon dioxide when added to water
a)
physical change
b)
chemical change
33.
clouds form in the sky
a)
physical change
b)
chemical change
34.
a piece of copper is cut in half
a)
physical change
b)
chemical change
35.
iron pipe rusts
a)
physical change
b)
chemical change
36.
ice cube melts
a)
physical change
b)
chemical change
37.
paper burns
a)
physical change
b)
chemical change
38.
milk sours (goes bad)
a)
physical change
b)
chemical change
39.
a)
Physical Change
b)
Chemical Change
40.
A chemical formula is a combination of symbols and numbers that represent a compound.
a)
True
b)
False
41.
Solutes dissolve in solvents.
a)
True
b)
False
42.
Which of the following is an example of a size-dependent physical property?
a)
volume
b)
state of matter
c)
conductivity
d)
boiling point
43.
The melting point refers to
a)
the point at which a liquid turns into a gas.
b)
the point at which a solid turns into a liquid.
c)
a substances ability to conduct thermal electricity.
d)
the amount of space something takes up.
44.
Physical properties can be used to separate a compound.
a)
True
b)
False
45.
What happens to the particles in a substance when thermal energy is removed?
a)
the particles move faster
b)
the particles speed does not change
c)
the particles move slower
46.
_______________ is when a gas turns into a solid.
a)
melting point
b)
sublimation
c)
condensation
d)
deposition
47.
The ________________ is best described as particles are neither created nor destroyed during a physical or chemical change.
a)
Law of Conservation of Mass
b)
Chemical Reaction
c)
Chemical Equation
d)
Change in Thermal Energy
48.
A _______________ is a characteristic of matter that can only be observed when a substance becomes a different substance.
a)
chemical property
b)
chemical equation
c)
chemical change
d)
chemical reaction
49.
___________ is best described as the amount of a substance in a certain volume.
a)
solubility
b)
density
c)
concentration
d)
state of matter
50.
Which of the following is an example of a balanced equation?
a)
Na + 2Cl -> NaCl
b)
2Fe + S -> Fe2S
c)
CO2 + H2O -> CH4 + 2O2
d)
H2 + O2 -> H2O
51.
Which of the following is NOT an indication that a chemical change may have taken place?
a)
bubbles
b)
odor
c)
solubility
d)
color
52.
Which of the following is NOT a factor that can affect the speed of a chemical reaction?
a)
state of matter
b)
temperature
c)
concentration
d)
surface area
53.
Which of the following is a size-independent property?
a)
boiling point
b)
density
c)
magnetism
d)
all are size-independent properties
54.
What particles of an atom are found in the nucleus?
a)
proton and electron
b)
electron and neutron
c)
proton and neutron
d)
protons only
55.
Ability to rust is this type of property:
a)
Physical property
b)
Chemical property
56.
Flammability is an example of what property?
a)
Chemical property
b)
Physical property
Reset
