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WorksheetsAtoms, Elements, Molecules and Compounds
Total questions: 40
Worksheet time: 29mins
Name
Class
Date
1.
What is the tiniest particle in the entire universe?
a)
cells
b)
gases
c)
atoms
d)
liquids
2.
Which part of an atom is POSITIVELY charged?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
3.
What part of an atom is NEGATIVELY charged?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
4.
Which part of an atom has no charge?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
5.
What is the name of a single type of atom?
a)
cell
b)
proton
c)
element
d)
atom
6.
What is the term for combining 2 or more atoms together?
a)
atoms
b)
elements
c)
molecules
d)
compounds
7.
What is the picture displayed?
a)
atom
b)
element
c)
molecule/compound
d)
cells
8.
What is the picture displayed?
a)
atom
b)
element and molecule
c)
cells
d)
compound
9.
What is the picture displayed?
a)
atom
b)
element
c)
molecule
d)
compound
10.
Review:
What is the formula for density?
What is the formula for density?
a)
D= M x V
b)
D= V / M
c)
D= V+M
d)
D= M / V
11.
an atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
12.
all matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
13.
What is the atomic number for an element with three protons?
a)
2
b)
1
c)
3
d)
6
14.
Beryllium has how many protons?
a)
4
b)
9.0122
c)
2
d)
13.0122
15.
What are the 3 subatomic particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
16.
Molecules are
a)
2 atoms bound together
b)
2 elements bound together
c)
2 or more atoms mixed together
d)
2 or more atoms bound together
17.
An element is made of
a)
Many types of atoms
b)
the Periodic Table
c)
One type of Atom
d)
Molecules
18.
If you see the symbols of two elements written side by side then it is an example of a ________________________ .
a)
compound
b)
electron
c)
neutron
d)
molecule
19.
Water consists of molecules that each have two atoms of hydrogen and one atom of oxygen. Water is considered a/an ____________________ .
a)
element
b)
atom
c)
compound
20.
Where are most metals on the periodic table?
a)
On the left
b)
On the right
c)
In the middle
d)
On the left and in the middle
21.
Using the element key for nitrogen, determine the atomic mass.
a)
7
b)
7.01
c)
14.007
d)
21.01
22.
What is true about the size of an atom?
a)
It can only be seen using a scanning tunneling microscope.
b)
It is about the size of the period at the end of this sentence.
c)
It is large enough to be seen using a magnifying lens.
d)
It is too small to see with any type of microscope.
23.
Hydrogen is a pure substance represented by the chemical symbol H. Which of the following best describes hydrogen?
a)
Hydrogen is an element made of two or more kinds of atoms.
b)
Hydrogen is a compound made of only one kind of atom.
c)
Hydrogen is a compound made of two or more kinds of atoms.
d)
Hydrogen is an element made of only one kind of atom.
24.
What defines a mixture?
a)
described by a chemical formula
b)
can be broken down into its basic substances through physical means
c)
created through a chemical reaction
d)
cannot be broken down into simpler substances
25.
Carbon dioxide is formed when two oxygen atoms chemically combine with a carbon atom. Which term best describes carbon dioxide?
a)
atom
b)
mixture
c)
element
d)
compound
26.
Review:
What is the formula for density?
What is the formula for density?
a)
D= M x V
b)
D= V / M
c)
D= V+M
d)
D= M / V
27.
Is salt (NaCI) a compound or a element
a)
Compound
b)
element
28.
How many elements are in HHe
a)
3
b)
4
c)
2
d)
5
29.
An example of matter made of only one element is
a)
water
b)
gold bar
c)
light bulb
d)
salad mixture
30.
Molecules are
a)
2 atoms bound together
b)
2 elements bound together
c)
2 or more atoms mixed together
d)
2 or more atoms bound together
31.
When __________ form, the elements lose there individual chemical properties and take on new properties.
a)
compounds
b)
atoms
c)
subscript
d)
formula
32.
A pure substance that contains two or more elements that are chemically bonded is:
a)
an atom
b)
a compound
c)
an ionic bond
d)
organic
33.
An object with which of the following densities will float on water?
a)
0.7 g/cm3
b)
1.2 g/cm3
c)
3.5 g/cm3
d)
11.4 g/cm3
34.
A can of Coke will sink in a bowl of water. A can of Diet Coke will float in a bowl of water. What does this tell you about the density of the Diet Coke?
a)
it is bigger than 1
b)
it is smaller than 1
c)
it is equal to 1
d)
it is equal to -1
35.
How many elements are in glucose?
C6H12O6
C6H12O6
a)
5
b)
3
c)
5
d)
12
36.
Explain the difference between an elements and a compound. Find an examples of an element and a compound.
a)
A pure substance that is composed of a single type of atom. Examples are silver, nitrogen, gold, silver and others on the periodic table of elements.
A compound is a pure substance composed of two or more different elements bonded together. H2O, NaCl ( table salt), CO2 (carbon dioxide)
A compound is a pure substance composed of two or more different elements bonded together. H2O, NaCl ( table salt), CO2 (carbon dioxide)
b)
A pure substance that is composed of a single type of atom. Examples are water, carbon dioxide, table salt and others on the periodic table of elements.
A compound is a pure substance composed of two or more different elements bonded together. H2O, NaCl ( table salt), CO2 (carbon dioxide)
A compound is a pure substance composed of two or more different elements bonded together. H2O, NaCl ( table salt), CO2 (carbon dioxide)
c)
A pure substance that is composed of a single type of atom. Examples are silver, nitrogen, gold, silver and others on the periodic table of elements.
A compound is a pure substance composed of two or more different elements bonded together. Hydrogen, Oxygen, Carbon and silver.
A compound is a pure substance composed of two or more different elements bonded together. Hydrogen, Oxygen, Carbon and silver.
d)
A mixed substance substance that is composed of a single type of atom. Examples are silver, nitrogen, gold, silver and others on the periodic table of elements.
A compound is a pure substance composed of two or more different elements bonded together. H2O, NaCl ( table salt), CO2 (carbon dioxide)
A compound is a pure substance composed of two or more different elements bonded together. H2O, NaCl ( table salt), CO2 (carbon dioxide)
37.
How many atoms are in glucose?
C6H12O6
C6H12O6
a)
18
b)
24
c)
12
d)
6
38.
Al, Fe are examples of ......
a)
protons
b)
elements
c)
compunds
d)
neutrons
39.
If you have H2, O2, CO2, H2O, Fe...you have a .............
a)
mixture of compounds and atoms
b)
mixture of elements and compunds
c)
pure substances
d)
elements only
40.
Water is composed of hydrogen molecules and an oxygen molecule. Which makes this formula a ....
a)
molecule and atoms
b)
compound and atom
c)
molecule and compound
d)
compound only
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