NEW
Font size
S
M
L
XL
WorksheetsScience Review
Total questions: 27
Worksheet time: 18mins
Name
Class
Date
1.
An element's identity is determined by the number of
a)
electrons.
b)
protons.
c)
neutrons.
d)
valence.
2.
The majority of elements on the periodic table are
a)
man made.
b)
nonmetals.
c)
metals.
d)
gases.
3.
The atomic number tells you what?
a)
number of electrons
b)
number of protons
c)
number of neutrons
d)
both electrons and protons in an atom.
4.
Who is credited for the first Periodic Table?
a)
Mendeleev
b)
Mosely
c)
Dalton
d)
Rutherford
5.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
6.
The atomic number of this pictured element is
a)
28
b)
58.6934
c)
Ni
d)
Nickel
7.
True or False: Elements in a group have the same number of electrons in their outer shell.
a)
true
b)
false
8.
True or False: Each row/period on the Periodic Table represents the number of energy levels present in an atom of the element.
a)
false
b)
true
9.
What happens to the atomic number of elements as you move left to right, up to down on the Periodic Table?
a)
Increases
b)
Decreases
10.
How many electrons does Oxygen need to fill its outer shell?
a)
3
b)
4
c)
1
d)
2
11.
The period for Bromine is ___________.
a)
3
b)
2
c)
4
12.
Beryllium is in group number______.
a)
Group 2
b)
Group 3
c)
Group 4
d)
Group 7
13.
What is made up two or more elements that are chemically combined?
a)
Element
b)
Mixture
c)
Compound
d)
Solids
14.
An element is made up of only one kind of _____.
a)
isotope
b)
plastic
c)
atom
d)
metal
15.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
16.
Which of the following formulae represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
17.
Water is a ___________.
a)
element
b)
mixture
c)
compound
18.
These can only be separated by chemical means.
a)
element
b)
compound
c)
mixture
d)
stuff
19.
Elements can be broken down into simpler substances.
a)
false
b)
true
c)
sometimes
20.
These are mixtures that are the same throughout.
a)
homogeneous mixtures
b)
heterogeneous mixtures
c)
mixed mixtures
21.
These are mixtures that are not the same throughout.
a)
homogeneous mixtures
b)
heterogeneous mixtures
c)
solutions
d)
water
22.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
23.
which atom has 4 neutrons?
a)
Li-6
b)
Li-7
c)
Li-8
d)
they have the same # of neutrons
24.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
25.
Isotopes have different numbers of
a)
protons
b)
neutrons
c)
electron
d)
properties
26.
Copper has how many protons?
a)
29
b)
63.5
c)
30
d)
11
27.
How many neutrons does an atom of the isotope Neon-22 have?
a)
12
b)
10
c)
22
d)
20
Reset
