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WorksheetsScience- Chapter 1 Lesson 3
Total questions: 16
Worksheet time: 8mins
Name
Class
Date
1.
The properties of salts are different from the properties of the elements that make them.
a)
true
b)
false
2.
Which one can be found on the periodic table?
a)
Compound
b)
Element
3.
A _____________ is a substance that is made of 2 or more elements that are chemically combined.
a)
atom
b)
cell
c)
element
d)
compound
4.
Label the change as a chemical change or a physical change.
Burning wood is a ________ change.
Burning wood is a ________ change.
a)
chemical
b)
physical
5.
Label the change as a chemical change or a physical change.
Melting ice cream is a ___________.
Melting ice cream is a ___________.
a)
chemical
b)
physical
6.
What is a compound?
a)
an atom with more electrons than protons
b)
a substance in which the atoms of two or more elements are combined together
c)
an atom with more neutrons than protons
d)
a substance in which the atoms of three or more elements are combined together
7.
Is this symbol an element or a compound?
H2O
H2O
a)
element
b)
compound
8.
Is this symbol an element or compound?
O2
O2
a)
Element
b)
Compound
9.
Which of the following is a compound?
a)
Co
b)
O2
c)
C
d)
CO2
10.
Which of the following is also known as water?
a)
H2O
b)
H2
c)
O2
d)
Au
11.
When hydrochloric acid (chlorine) and sodium hydroxide (sodium) combine, they form _________________.
a)
table salt
b)
sodium metal
12.
The compound that makes up 60% of your body is ________________.
a)
CO2
b)
H2O
13.
Two different compounds can contain the same ______________.
a)
element
b)
molecule
14.
The elements that make table salt are chlorine and
a)
gold
b)
oxygen
c)
sodium
d)
plutonium
15.
Chlorine and sodium are NOT safe to eat separately.
a)
true
b)
false
16.
Salt melts at a high temperature.
a)
true
b)
false
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