Review 1st Semester Diffusion Question Preview (ID: 34541)
NA.
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A drop of food coloring placed into a glass of water spreads out evenly, coloring all the water. What does this evidence suggest?
a) particles in water are moving
b) water contains positive and negative charges
c) water flows inside a cup just like in a river
d) water can support many kinds of living things
A bottle of perfume is opened and the smell travels across the room. What does this observation suggest? Particles of perfume
a) move faster when they are cold
b) move more slowly when cold
c) are always in motion
d) are large enough to see with a microscope
When the temperature of a substance increases, what happens to the speed of the molecules? They
a) stays the same
b) increase in speed
c) decrease in speed
d) are not measureable
What happens to the volume of most substances when the temperature increases? It
a) stays the same
b) increases
c) decreases
d) is not measureable
What happens to molecules in a liquid when it changes to a gas? The molecules have:
a) moved fast enough to escape the liquid
b) moved slowly enough to escape the liquid
c) moved around from the container
d) moved toward the other molecules
What would happen to a balloon if you put in in a freezer?
a) it will grow
b) it will shrink
c) it will change color
d) it will stay the same
Sidewalks have “cracks” which are imprinted every meter or two. What is the purpose of these cracks?
a) They have always been there.
b) The sidewalk looks better and can be more easily manufactured
c) It makes the sidewalk easier to measure
d) They help prevent breaking when the cement is heated
Why might a metal door be difficult to open during hot weather? The door
a) has expanded and the door frame has not
b) has contracted and the door frame has expanded
c) is changing phases and will melt if it gets hot enough
d) has hinges that rust in warm weather
An increase in temperature of a liquid causes it to change to which phase?
a) Solid
b) Liquid
c) Gas
d) Pick me I am the Wrong Answer
What color is the white house?
a) Green
b) pink
c) yellow with a dash of red
d) white
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