Matter Review

Corey 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?

• physical change
• chemical change
• scientific change
• geological change

Ava put water, sugar, and yeast into a balloon. Then she put the balloon into a pan of warm water and observed how the balloon changed. Next, Matthew repeated the investigation with another balloon. What is the best reason for Matthew to repeat it?

• To write the same report.
• To practice the experiment.
• To come to the same conclusion.
• To be sure her observations are accurate.

Sam put water, sugar, and yeast into a balloon. Then he measured the mass of the balloon. He put the balloon in a warm place for 2 hours. Then he measured the mass again. He repeated his experiment three times to get more data. Predict how the mass of the balloon changed.

• less mass
• more mass
• same mass
• no more mass

Tink filled two balloons with the same amounts of water, sugar, and yeast. She put one on a table in the classroom. She put the other on a sunny windowsill. Why did Tink observe that the balloon in the window was larger? 

• The windowsill is cooler than the table.
• The windowsill is warmer than the table.
• The classroom table is warmer than the windowsill.
• The classroom table is the same temperature as the windowsill.

There are three main states of matter: liquid, solid, and gas. Which statement describes the shape of a solid?

• It has its own shape.
• It doesn't have a shape.
• It takes the shape of its container.
• It changes shape with temperature.

Which statement describes a difference between solids and liquids?

• Temp. can change a solid to a liquid, but it can't change a liquid to a solid.
• Solids have a definite volume, but liquids do not.
• The particles in a solid are much closer together in a solid compared to a liquid.
• Solids take the shape of their containers, liquids maintain their own shape.

Cat and Roni want to find the volume of four different cubes. Which tools are best for measuring the volume of solids?

• balance and ruler
• graduated cylinder and ruler
• balance and graduated cylinder
• graduated cylinder and thermometer

Matter may be a gas, solid, or liquid. It can 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 termperature

 Each of the states of matter has specific characteristics. Which statement correctly describes one of these characteristics?

• Solids flow from one place to another.
• Gases can expand and be compressed.
• Liquids have definite volume and shape.
• The particles in solids have weak forces of attraction

When an egg is cracked and put in a hot pan, it flows easily. After it cooks for a minute, the egg becomes solid.

• Breaking the shell is a physical change in the egg that make it solid.
• Breaking the shell is a chemical change that makes the egg become solid.
• Heating the egg on the stove causes the egg to evaporate and become solid.
• Adding heat causes a chemical change in the molecules of the egg that makes it solid.