6th Science Topic 1, Lesson 3 Changes in Matter Review

What happens during a physical change?

• The matter changes into one or more new substances.
• The form or appearance of matter changes but does not turn into a different substance.
• A new substance is produced.
• The matter shatters when it is dropped on the floor.

What is an example of a physical change?

• A change of quality.
• A change of chemical formula.
• A change of state.
• A change of mass.

What happens to a substance after a chemical change?

• The matter shatters when it is dropped on the floor.
• Two or more substances combine to form different substances.
• The form or appearance of matter changes but does not turn into a different substance.
• A change of matter occurs.

What is an example of a chemical change?

• Photosynthesis
• Bending
• Crushing
• Breaking

What is the law of conservation of matter?

• The loss of matter in a chemical reaction.
• The gain of electrons during a chemical reaction.
• Matter is not created or destroyed in any chemical or physical change.
• The change of gravity on an object.

What happens to energy during a chemical change?

• Energy is never created or destroyed; it is only transformed in a chemical change.
• Energy is lost.
• Energy is created.
• Energy is destroyed.

What is temperature?

• the movement of thermal energy from a solid to a liquid
• a measure of how hot or cold something is
• the difference in thermal energy between two objects
• a measure of how fast thermal energy is moving

What is an endothermic change?

• a change that occurs when energy is released.
• a change that occurs when energy is destroyed.
• a change that occurs when energy is created.
• a change that occurs when energy is absorbed.

What is an exothermic change?

• a change that occurs when energy is created.
• a change that occurs when energy is absorbed.
• a change that occurs when energy is destroyed.
• a change that occurs when energy is released.

A change in matter that produces one or more new substances is a ______

• physical change
• temperature
• chemical change
• conservation