Sink or Float
A cork is placed in water and floats. What does this tell you?
A. The cork has no mass.
B. The cork is denser than water.
C. The cork is less dense than water.
D. The cork dissolved in water.
C. The cork is less dense than water.
Which material will a magnet attract?
A. Plastic
B. Copper
C. Iron
D. Wood
C. Iron
Which tool is best for measuring the mass of a rock?
A. Ruler
B. Balance scale
C. Graduated cylinder
D. Thermometer
B. Balance scale
A student adds salt to a glass of water and stirs until it disappears. Which statement is true?
A. The salt has lost its mass.
B. The salt is still in the water, but invisible.
C. The salt has changed into a gas.
D. The salt and water became a new substance.
B. The salt is still in the water, but invisible.
Which material is the best conductor of electricity?
A. Rubber
B. Glass
C. Copper
D. Wood
C. Copper
Why does oil float on top of water?
A. Oil is more dense than water.
B. Oil has less density than water.
C. Oil has no mass.
D. Oil dissolves in water.
B. Oil has less density than water.
Which statement about magnets is true?
A. Opposite poles repel each other.
B. Like poles attract each other.
C. Opposite poles attract each other.
D. Magnets only work in water.
C. Opposite poles attract each other. ✅
Which property is used to identify a liquid’s volume?
A. How heavy it feels
B. How much space it takes up
C. How easily it dissolves
D. How much mass it has
B. How much space it takes up
Which best describes what happens when a popsicle melts outside on a hot day?
A. The popsicle changes into a gas.
B. The popsicle changes from a liquid to a solid.
C. The popsicle changes from a solid to a liquid.
D. The popsicle disappears.
C. The popsicle changes from a solid to a liquid.
Why are the handles of pots and pans often made of plastic or wood?
A. They look nicer.
B. They stop heat from burning your hands because they are insulators.
C. They make the pan stronger.
D. They help food cook faster.
B. They stop heat from burning your hands because they are insulators.
If an object’s density is greater than 1 g/cm³, what will it do in water?
A. Float
B. Sink
C. Evaporate
D. Dissolve
B. Sink
Which will the magnet attract?
A. Only the rubber band
B. Nail and paperclip
C. Rubber band and stick
D. All four objects
B. Nail and paperclip
Which state of matter has particles that are far apart and move quickly?
A. Solid
B. Liquid
C. Gas
D. Plasma
C. Gas
A student shakes a bottle of salad dressing. After a while, the oil floats back to the top. Why does this happen?
A. Oil is soluble in water
B. Oil is less dense and insoluble in water
C. Oil changes into a gas
D. Oil becomes a solid in water
B. Oil is less dense and insoluble in water
Which group is made up of only insulators?
A. Plastic, wood, rubber
B. Copper, silver, gold
C. Steel, iron, aluminum
D. Salt, water, vinegar
A. Plastic, wood, rubber
An ice cube floats in water. Which is true?
A. Ice is denser than liquid water.
B. Ice is less dense than liquid water.
C. Ice has no mass.
D. Ice is insoluble in water.
B. Ice is less dense than liquid water.
Which tool uses magnetism to help people find direction?
A. Thermometer
B. Compass
C. Ruler
D. Balance scale
B. Compass
Which property is used to identify a liquid’s volume?
A. How heavy it feels
B. How much space it takes up
C. How easily it dissolves
D. How much mass it has
B. How much space it takes up ✅
Which change of state happens when water boils on a stove?
A. Liquid → Gas
B. Solid → Liquid
C. Gas → Liquid
D. Liquid → Solid
A. Liquid → Gas ✅
Which best explains why wires inside electronics are covered in plastic?
A. To make them stronger
B. To keep them from breaking
C. To prevent electric shock, because plastic is an insulator
D. To make the wires look neat
C. To prevent electric shock, because plastic is an insulator
A teacher gives students a mystery liquid. They drop a wooden block into it, and the block sinks. The same block floats in water. What can the students conclude?
A. The mystery liquid is less dense than water.
B. The mystery liquid is more dense than water.
C. The block is denser than both liquids.
D. The block is soluble in water.
B. The mystery liquid is less dense than water.
A student places a magnet near different objects. Which object will NOT be attracted?
A. Steel nail
B. Aluminum can
C. Iron paperclip
D. Metal screw (iron)
B. Aluminum can
Which of these is an example of a physical property of matter?
A. Flammability
B. Solubility
C. Ability to rust
D. Burning
B. Solubility
Which of the following shows a gas dissolving in a liquid?
A. Sugar in hot water
B. Bubbles in soda
C. Salt in soup
D. Sand in a jar of water
B. Bubbles in soda ✅
. A student touches two spoons: one made of metal and one made of wood. The metal spoon feels cold while the wooden spoon feels warm. Why?
A. Metal is a conductor.
B. Wood has no mass.
C. Wood makes heat disappear.
D. Metal is an insulator.
A. Metal is a conductor.