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WorksheetsElements and Compound
Total questions: 58
Worksheet time: 59mins
Name
Class
Date
1.
The basic unit of matter is
a)
a mixture
b)
a substance
c)
an atom
d)
a compound
2.
A substance that contains only one type of atom is a(n)
a)
compound
b)
element
c)
heterogeneous mixture
d)
homogeneous mixture
3.
The smallest unit of an element that still has the properties of that element is?
a)
a substance
b)
a mixture
c)
a compound
d)
an atom
4.
Which of these is an example of a molecule?
a)
a small nugget of pure gold
b)
the smallest grain of salt in a salt shaker
c)
a small drop of sugar water
d)
two oxygen atoms joined to a carbon atom
5.
Which of these is not an example of a molecule?
a)
CH4
b)
C
c)
C6H12O6
d)
H2O
6.
Which of these is a mixture?
a)
Uncooked chocolate chips and cookie dough blended together with a spoon.
b)
Distilled water
c)
A nugget of gold
d)
A molecule of Oxygen
7.
The smallest unit of a compound that still has the properties of that compound is?
a)
an atom
b)
a molecule
c)
a mixture
d)
a substance
8.
Two or more elements chemically combined:
a)
an atom
b)
a compound
c)
a mixture
d)
a pure substance
9.
Which of the following elements has an atomic symbol of Cu?
a)
Cuppernium
b)
Copper
c)
Carbon
d)
Radon
10.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
11.
This picture represents which of the following?
a)
Element
b)
Compound
c)
Mixture
12.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
13.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
14.
Elements are represented by chemical symbol. Symbols are written with
a)
all lower case letters
b)
all capital letters
c)
always only one letter
d)
At least and ONLY one capital letter
15.
A substance made by mixing other substances together and being able to then separate is the definition of a
a)
Combination
b)
Solution
c)
Mixture
16.
How many protons does Au have?
a)
80
b)
79
c)
47
d)
85
17.
This is an example of a:
a)
Compound
b)
Element
c)
Diatomic molecule
d)
Mixture of compounds
18.
The smallest identifiable unit of an element is a(n)__________.
a)
electron
b)
atom
c)
compound
d)
mixture
19.
The following is a:
a)
Compound
b)
Element
c)
Mixture of elements
d)
Diatomic molecule
20.
14. a milk shake
a)
A. MIXTURE
b)
B. COMPOUND
c)
C. ELEMENT
21.
15. gold
a)
A. MIXTURE
b)
B. COMPOUND
c)
C. ELEMENT
22.
A pure substance...
a)
is an element or a compound
b)
is an element or a mixture
c)
is a compound or a mixture
d)
is a mixture
23.
A substance made of only one type of atom is called —
a)
an element
b)
a mixture
c)
a compound
d)
a salt
24.
What is an example of an element?
a)
Oxygen
b)
Pure water
c)
Air
d)
Table salt
25.
The smallest part of an element is
a)
proton
b)
atom
c)
compound
d)
mixture
26.
Is salt (NaCI) a compound or a element
a)
Compound
b)
element
27.
which one can be found on the periodic table
a)
Compound
b)
Element
28.
What is the definition of a compound?
a)
The smallest part of any substance which can exist on its own
b)
Two or more atoms chemically joined together (can be the same or can be different)
c)
A simple substance in which all the atoms are identical
d)
Two or more different elements chemically joined together
29.
All matter is made of .....
a)
energy
b)
atoms
c)
air
d)
chemistry
30.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
31.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
32.
an atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
33.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
34.
True or False? Neutrons have a negative charge
a)
True
b)
False
35.
What is the atomic number for an element with three protons?
a)
2
b)
1
c)
3
d)
6
36.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
37.
In the modern periodic table elements are arranged by:
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
38.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
39.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
40.
electrons have this type of charge?
a)
negative
b)
positive
c)
neutral
41.
Based off of the image, what type of matter is shown?
a)
gas
b)
solid
c)
liquid
42.
What is CO2 and example of?
a)
element
b)
mixture
c)
compound
43.
What is the definition of a mixture?
a)
when a solute dissolves in a solvent
b)
a substance whose atoms has the same number of protons
c)
a thing that is composed of two or more separate elements
d)
one or more substances mixed together
44.
Which of these selections is an example of an element?
a)
H20
b)
Carbon
c)
sugar mixed with tea
d)
OH-
45.
This type of substance is made up of one type of atom.
a)
Element
b)
Compound
c)
Mixture
46.
This is the smallest substance that can make up a substance while keeping its identity.
a)
Atom
b)
Molecule
c)
Element
d)
Compound
47.
This type of substance is formed through a chemical change.
a)
Element
b)
Compound
c)
Mixture
48.
Which option shows only elements?
a)
NaCl, MgO, OH
b)
O, He, H,
c)
OH, He, Al
d)
O+H, He+Al
49.
Jay combines water, sugar, and lemon juice to form lemonade. What type of substance was made?
a)
Element
b)
Compound
c)
Mixture
50.
Which type of substance cannot be broken down into simpler substances?
a)
Element
b)
Compound
c)
Mixture
51.
Which of the following is NOT considered a pure substance?
a)
Element
b)
Compound
c)
Mixture
52.
Which of the following best describes a compound?
a)
A pure substance made up of one type of atom.
b)
A pure substance made up of two or more atoms chemically combined.
c)
A substance made up of two or more pure substances physically combined.
d)
A substance made up of three atoms.
53.
Which of the following lists only elements?
a)
H2O + OH, MgCl2
b)
H2O, KF, Ne
c)
KCl, Ag, Au
d)
K, Cl, N
54.
Which of the following makes up air, water, and gold?
a)
Protons
b)
Neutrons
c)
Electrons
d)
Atoms
55.
The chemical formula: N would represent what type of substance?
a)
Element
b)
Compound
c)
Mixture
56.
Magnesium and chlorine bond to form magnesium chloride. What type of substance has formed?
a)
Element
b)
Compound
c)
Mixture
57.
Can oxygen be broken down to a simpler substance?
a)
Yes
b)
No
58.
The substance H+H would represent which of the following?
a)
Element
b)
Compound
c)
Mixture
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