Properties and partials
Which statement is true about the particles that make up matter?
A They are large enough to be seen with the human eye.
B They change size depending on the temperature of the matter.
C They change size depending on the speed of the matter.
D They are very small and cannot be seen with the human eye.
D They are very small and cannot be seen with the human eye.
Joe collected a bucket of snow, put it in a pot, and heated it until he saw steam. Which lists the states of matter in the correct order from snow to steam?
A solid → gas → liquid
B solid → liquid → gas
C gas → solid → liquid
D liquid → solid → gas
A solid → gas → liquid
A student adds ice cubes to a bowl and leaves it on a table for 10 minutes. After 10 minutes the ice has melted into water that takes the bowl's shape, and mass remains the same. Which statement best explains the state after 10 minutes?
A The substance is a solid because the mass does not change.
B The substance is a gas because the temperature increases.
C The substance is a liquid because the mass remains the same.
D The substance is a liquid because the substance takes the shape of the bowl.
D The substance is a liquid because the substance takes the shape of the bowl.
Which two physical properties did Jesse use when he described his lost ball as "white and bumpy"?
A size and volume
B shape and texture
C mass and size
D color and texture
D color and texture
Lillian’s balloons are filled with helium. How do the helium particles inside Lillian’s balloons move?
A The helium particles are very close together and are vibrating.
B The helium particles remain in place and do not move.
C The helium particles are close to one another but are able to move away from each other and flow from place to place.
D The helium particles easily move far apart from each other and spread out through the available space.
D The helium particles easily move far apart from each other and spread out through the available space.
200 (medium) — A student mixes vinegar and rusted nails. The vinegar lightens in color, rust settles, and nails become shiny and smooth. Which of the following indicates a chemical change occurred?
A The rust dissolving and nails changing appearance suggests a chemical reaction.
B The rust settling is a physical change only.
C Only changes in state can show chemical change.
D No chemical change can occur between metal and vinegar.
A The rust dissolving and nails changing appearance suggests a chemical reaction.