5th Grade Matter Review

Sierra made a mixture of sand and pebbles to use for an art project. When she is finished, she wants to separate the sand and pebbles to be used for other projects. Which is the best way for her to separate the sand from the pebbles?

• by size

• by color

• by shape

• by density

Tania’s mom boils water in a pot on the stove to make homemade soup. Which of the following ingredients will dissolve in the water?

• garlic

• oil

• pepper

• salt

A container holds a mixture of glass shards and iron filings. What is the best way to separate the glass shards from the iron filings?

• use a magnet

• heat the mixture

• sort them by size

• separate them by shape

The following illustration shows a tool that is used to separate certain mixtures.

• a mixture that is a solution, such as salt water

• a mixture of particles of the same size with different densities

• a mixture of particles of different sizes, such as seashells and sand

• a mixture of steel, which is magnetic, and aluminum, which is not magnetic

There are three main states of matter: liquid, solid, and gas.

Which 2 statements describe a liquid?

• it has a fixed shape

• it takes the shape of its container

• it expands to fill its container

• it has a fixed volume

Tags

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Matter may be a gas, solid, or liquid. It can go through a PHYSICAL change from one state to another. Which change most often causes matter to change state?

• change in mass

• change in color

• change in volume

• change in temperature

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Jacob put yeast into two bowls of water and added a little sugar to each bowl. He put one bowl in a warm place and the other bowl into the refrigerator. After a while, Jacob observed tan-colored foam spilling over the sides of the warm bowl. What kind of change is this?

• a physical change

• a chemical change

• a scientific change

• a geological change

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Renae completed an experiment on reaction rate. Renae carried out the same reaction four times, but at four different temperatures. The table below shows how long each reaction took to complete.

• Reaction rate is not affected by temperature.

• Reactions occur faster at higher temperatures.

• Reactions occur slower at higher temperatures.

• Reactions do not occur at temperatures below 15 °C.

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Mrs. Lopez is a chemist who is studying salt crystals. She wants to slow the rate at which the crystals dissolve in a solution of water. What could she do to slow the dissolving rate?

• heat the solution

• crush the salt crystals

• cool the solution

• stir the solution

Tags

NGSS.MS-PS3-4

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There are different characteristics for each of the states of matter. Which statement describes a difference between liquids and solids?

• Temperature can change a solid to a liquid, but it 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 liquid.

• Solids take on the shape of their containers and liquids maintain their own shapes.