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WorksheetsScience BM 2 Review
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
two or more substances combine and DO NOT make a new substance
a)
mixture
b)
compound
c)
chemical change
2.
two or more substances combine and DO NOT make a new substance
a)
chemical change
b)
physical change
c)
compound
3.
two or more substances react to create a new substance
a)
physical change
b)
mixture
c)
chemical change
4.
Solid, liquid, gas à changes occur with adding/taking heat
a)
states of matter (H2O)
b)
chemical change
c)
none of these
d)
all of these
5.
build-up of electrical charges in one place
a)
current electricity
b)
electromagnet
c)
static electricity
6.
energy created by moving charged particles through conductors
a)
static electricity
b)
current electricity
c)
both of these
7.
material through which heat and electricity and flow easily
a)
insulator
b)
conductor
c)
rubber
8.
a material that slows the flow of heat and electricity
a)
conductor
b)
copper
c)
insulator
9.
an electric circuit with only one path that current can follow
a)
parallel circuit
b)
series circuit
c)
resistance
10.
an electric circuit with two or more paths for current
a)
electromagnet
b)
series circuit
c)
parallel circuit
11.
What are the parts of an electrical circuit that are needed to make a complete circuit:
a)
Power source (battery), conductor(wires), output device (light bulb)
b)
copper wire, lightbulb, nail
c)
both of these
12.
opposite charges pull towards each other or come together like north and south poles.
a)
repel
b)
attract
c)
neutral
13.
like charges push away or pull apart (ex: north/north pole or south/south pole; and +/+; -/-)
a)
attract
b)
repel
c)
neutral
14.
wires or iron core that turns into a magnet when electricity runs through
a)
permanent magnet
b)
bar magnet
c)
electromagnet
15.
You can increase the magnetic strength of an electromagnet by:
a)
removing the coils of wire
b)
adding more coils of wire
c)
none of these
16.
Cutting, peeling, mashing, folding are examples of a:
a)
chemical change
b)
chemical reaction
c)
physical change
d)
changing chemical properties
17.
Rotting, burning, frying hot wings, and rusting are examples of:
a)
physical changes
b)
chemical changes
c)
cutting
18.
Melting process of water, evaporation of water, condensation, and freezing point of water are examples of water changing states or __________ _________.
a)
physical changes
b)
chemical properties
c)
chemical change
19.
Matter can change from one state to another by:
a)
never removing or adding heat energy
b)
adding or removing heat
c)
none of these
20.
Electrical charges that move to cause electricity are:
a)
Protons
b)
Neutrons
c)
Electrons
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