Carlton adds salt to water. He says that the salt must have become a different substance because it disappeared. Which of the following could you do to support or contradict Carlton’s claim?
Add the same amount of salt to
different amounts of water to see if it happens again.
Add different amounts of salt to the
same amount of water and see if it disappears.
Let the water evaporate to show
that the salt is still present.
Heat the salt water to see if it boils. 5.5D
There are different characteristics for each of the states of matter. Which statement describes a difference between solids, liquids and gases?
Temperatures can change a solid to
a liquid, but cannot change a liquid to a solid.
Solids have a definite volume, and
liquids do not have a definite volume.
The particles in a solid are much
closer together than the particles in a gas.
Solids take on the shape of their
containers, and liquids maintain their own shapes.
5.5A
Which type of matter is classified as a conductor of thermal energy?
metal
wood
cotton
plastic 5.5A
Freddie is investigating this electrical cord.
He wants to classify the materials in the cord as materials that conduct or those that insulate electric energy. Which is the correct classification?
conduct: plastic; insulate: rubber
conduct: metal; insulate: plastic
conduct: plastic; insulate: metal
conduct: rubber; insulate: plastic 5.5A
Sara wanted to classify substances based on a certain physical property. She set up five beakers of water. She chose five substances to test. She added one substance to each beaker, stirred, and observed. She noted whether the added substance could still be seen. What physical property was Sara testing?
solubility
magnetism
relative density
ability to conduct thermal energy 5.5A
Name ______________________________________ Date _________
Carlos takes some ice cubes from the freezer. At what temperature did the water freeze?
at 0 °C
between 0 °C and 50 °C
between 50° C and 100 °C
at 100 °C 5.5B
The following illustration shows a tool that can be used to separate elements of certain mixtures.
This tool can be used to separate and analyze what type of mixture?
a solution of two solids
a mixture of particles with different
densities
a mixture of particles of different
sizes
a mixture of magnetic and
nonmagnetic items 5.5A, 5.5C
Food dye is added to water to make a solution. What physical property of the water changes when the food dye is added?
color
magnetism
temperature
state of matter 5.5D
Which of the following is a property of both liquids and gases, but not solids?
can flow
can be compressed
has a definite shape
has a definite texture 5.5A
CJ wanted to compare the strength of three different magnets. Which procedure would allow CJ to classify the magnets according to their magnetic strength?
