Physical Science

What is an example of a mixture that can be separated using a magnet?

• Iron filings can be separated from other materials using a magnet.

• Sand can be separated from salt using a magnet.

• Sugar can be separated from water using a magnet.

• Oil can be separated from vinegar using a magnet.

What is a physical change?

• A change that results in the formation of new substances.

• A change in which no new substances are formed, such as molding clay.

• A change that only affects the chemical properties of a substance.

• A change that occurs only at high temperatures.

What is a reversible change?

• A change that cannot be undone, like burning wood.

• A change that can be undone, such as melting ice back into water.

• A change that occurs only in living organisms.

• A change that results in a new substance, like rusting iron.

Which mixture can be best separated with a filter?

• Sand and water

• Salt and water

• Sugar and water

• Oil and water

Can a mixture be separated?

• Yes, mixtures can be separated into their individual components using physical methods.

• No, mixtures cannot be separated.

• Mixtures can only be separated using chemical methods.

• Mixtures can be separated, but only under specific conditions.

What happens when a liquid reaches its boiling point?

• It freezes into a solid.

• It changes from a liquid to a gas.

• It remains a liquid but increases in temperature.

• It evaporates without changing state.

What is an example of a chemical change?

• Baking a cake, where ingredients undergo a chemical reaction.

• Melting ice to form water.

• Boiling water to produce steam.

• Dissolving sugar in water.

What is a solution?

• A type of mixture where one substance is dissolved in another, like salt in water.

• A solid substance that cannot dissolve in any liquid.

• A gas that is mixed with another gas to form a new substance.

• A liquid that contains no other substances.

What is an irreversible change?

• A change that can be easily reversed, like freezing water.

• A change that cannot be undone, such as burning wood.

• A temporary change, like melting ice.

• A change that occurs only in living organisms.

What is a mixture?

• A mixture is a combination of two or more substances that are not chemically bonded.

• A mixture is a single substance made up of only one type of molecule.

• A mixture is a chemical reaction between two or more elements.

• A mixture is a solution where one substance completely dissolves in another.