WorksheetsChemistry
Total questions: 50
Worksheet time: 34mins
Name
Class
Date
1.
Basic unit of matter - the smallest piece of matter known
a)
Element
b)
Atom
c)
Molecule
d)
Compound
2.
Density is...
a)
the amount of mass in an object
b)
the amount of space an object takes up
c)
the amount of mass in a given space
d)
the weight of an object
3.
How many protons does Carbon have?
a)
3
b)
4
c)
5
d)
6
4.
Negatively charged part of an atom located in levels outside the nucleus
a)
Proton
b)
Neutron
c)
Electron
d)
Neutron
5.
In a liquid, the molecules have a definite shape and a definite volume
a)
True
b)
False
6.
The density of water is
a)
.1 g/cubic cm
b)
10g/cubic cm
c)
1.0 g/cubic cm
d)
0 g/cubic cm
7.
Burning a piece of paper
a)
Chemical Change
b)
Physical Change
8.
Mixing salt and water
a)
Chemical Change
b)
Physical Change
9.
Melting Ice
a)
Chemical Change
b)
Physical Change
10.
Milk turning sour
a)
Chemical Change
b)
Physical Change
11.
What is the symbol for chlorine?
a)
C
b)
Ch
c)
Ce
d)
Cl
12.
Which of these elements has a symbol which DOES NOT include a letter from its name?
a)
iron
b)
helium
c)
magnesium
d)
zinc
13.
What is the symbol for the element Neon?
a)
Na
b)
Ne
c)
He
d)
N
14.
A _________ is a substance made of two or more DIFFERENT elements chemically combined.
a)
mixture
b)
compound
c)
substance
15.
A mixture can be separated by ________ means.
a)
physical
b)
chemical
16.
Which of the following is NOT a mixture?
a)
NaCl + H2O
b)
C6H12O6 + H2O
c)
C6H12O6
d)
SiO2 +H2O
17.
Salt Water
a)
Compound
b)
Mixture
18.
Chalk and Vinegar
a)
Compound
b)
Mixture
19.
Has properties different than the elements that make it up
a)
Compound
b)
Mixture
20.
A bar of gold is made of only one ______
a)
Plasma
b)
Mixture
c)
Element
d)
Compound
21.
If the number of electrons in an element changes, a new element is formed
a)
True
b)
False
22.
These are the two particles located inside the nucleus of an atom
a)
Protons and Electrons
b)
Protons and Neutrons
c)
Electrons and Neutrons
d)
Neutrons and Molecules
23.
How many ATOMS are in the following compound: C2H4O2
a)
3
b)
8
c)
1
d)
6
24.
How many MOLECULES are in the following compound: CaCO3
a)
1
b)
3
c)
5
d)
0
25.
If I mix 8 grams of kool-aid powder with 82 grams of water, how much will the resulting kool-aid drink weigh?
a)
A little more than 82 grams
b)
74 grams
c)
90 grams
d)
82 grams
26.
Elements with similar properties
a)
Periods
b)
Groups
27.
Left of zigzag line
a)
metals
b)
nonmetals
c)
metalloid
28.
On Periodic Table, how are elements ordered?
a)
color
b)
shape
c)
atomic number
d)
alphabetically
29.
which of the following is an example of a physical change?
a)
a car rusting
b)
cutting a piece of wood
c)
acid rain corroding a barn door
d)
water seperating into hydrogen and oxygen atoms.
30.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
31.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
32.
What is the number 22?
a)
APE number
b)
Atomic Mass
c)
Element Name
d)
Chemical Symbol
33.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
34.
Something that is made up of only one kind of atom is known as _________________.
a)
a molecule
b)
a compound
c)
an element
d)
a proton
35.
A "group" is a ____________ on the periodic table.
a)
column
b)
row
36.
A "period" is a ____________ on the periodic table.
a)
column
b)
row
37.
Helium, neon, argon, krypton, xenon, and radon are known as _____________.
a)
halogens
b)
noble gases
c)
metalloids
d)
transition elements
38.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
39.
Is salt (NaCI) a compound or a element
a)
Compound
b)
element
40.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
41.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
42.
The negatively charged particles of an atom are the ______.
a)
electrons
b)
protons
c)
neutrons
d)
protons & neutrons
43.
The positively charged particles of an atom are the ________.
a)
electrons
b)
protons
c)
neutrons
d)
protons & neutrons
44.
What is the mass number of this element?
a)
5
b)
27
c)
32
d)
59
45.
# neutrons + # protons = ___
a)
atomic number
b)
Atomic thing
c)
Mass Number
d)
Valence Electrons
46.
Where on the periodic table are the metalloids found?
a)
Red
b)
green
c)
blue
47.
Where on the periodic table are most of the nonmetals found?
a)
red
b)
blue
c)
green
48.
Luster is ___________
a)
A. the way light is reflected off a surface.
b)
A. how well a piece of matter conducts electricity.
c)
A. the capability of being drawn out into thin wires or threads.
d)
A. the capability of being hammered out thin.
49.
Brittleness is _________
a)
the capability of being broken.
b)
the capability of being bent.
c)
the capability of being stretched.
d)
the capability of being molded.
50.
Metalloids _____________
a)
have no properties of metals.
b)
have no properties of nonmetals.
c)
have some properties of both metals and nonmetals.
d)
none of the above
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