A boy is pouring milk for breakfast. The molecules in the milk are —
a)
packed tightly and barely moving
b)
spread apart and not moving at all
c)
spread far apart and moving fast
d)
moving freely around each other (flowing)
4.
A student spilled an entire carton of milk on her lunch tray. Which property of the milk changed when the milk was spilled?
a)
the weight
b)
the shape
c)
the mass
d)
the volume
5.
What causes water molecules to change from a liquid into a gas?
a)
Pouring the water
b)
Drinking the water
c)
Cooling the water
d)
Heating the water
6.
The process shown would be classified as —
a)
evaporation
b)
condensation
c)
transpiration
d)
precipitation
7.
The particles in a liquid move faster when the temperature ________.
a)
increases
b)
decreases
8.
Which of the following will NOT happen when heat is applied?
a)
Liquid water boils and becomes steam or gas
b)
Solid ice melts and becomes a liquid
c)
Liquid water evaporates and becomes a gas
d)
Water freezes and becomes solid ice
9.
Atoms are the smallest part of a(n) —
a)
neutron
b)
electron
c)
proton
d)
element
10.
Hydrogen, oxygen and helium are examples of —
a)
neutrons
b)
electrons
c)
protons
d)
elements
11.
What is the smallest part of matter?
a)
An atom
b)
A voltage
c)
A circuit
d)
A switch
12.
The carbon dioxide compound is made of —
a)
2 oxygens and 1 hydrogen
b)
2 oxygens and 1 carbon
c)
2 hydrogens and 1 oxygen
d)
2 carbons and 1 oxygen
13.
When one molecule of sodium combines with one molecule of chlorine, what is formed?
a)
S2Cl2
b)
NaCl2
c)
NaCl
d)
SC
14.
A ____________ is a combination of two or more substances that do not lose their identifying characteristics when put together. It can be separated by hand.
a)
Solution
b)
Mixture
c)
Compound
d)
Molecule
15.
Choose the mixtures (you must select ALL correct answers).
a)
b)
c)
d)
16.
What is formed when two or more atoms are held together?
a)
A molecule
b)
An electron
c)
An element
d)
A proton
17.
What compound is made of hydrogen and oxygen atoms?
a)
Iron
b)
Water
c)
Gold
d)
Helium
18.
A student combined sand and iron filings in a cup. He separated them using a magnet. Before he separated them, they were an example of —
a)
a molecule
b)
a solution
c)
a mixture
d)
a neutron
19.
Sugar is poured into a glass of water and dissolves. This is an example of a(n) —
a)
solution
b)
ratio
c)
element
d)
compound
20.
Which is a solution?
a)
Lettuce and cucumber salad
b)
Mixed fruit salad
c)
Chocolate milk
d)
Peanuts and fruit
21.
A person served a fruit salad made with bananas, grapes, and apples. The fruit salad is an example of a —