Science Milestone Review

Is rusting a bicycle a chemical or physical change?

• Chemical change.

• Physical change.

• Mechanical change.

• Thermal change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is an example of a chemical change?

• Burning wood.

• Melting ice.

• Boiling water.

• Dissolving sugar in water.

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is a chemical change?

• A change that results in the formation of a new substance.

• A change that can be reversed easily.

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

• A change that occurs without any energy transfer.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is a physical change?

• A change that occurs but does not result in the formation of a new substance.

• A change that results in the creation of a new substance.

• A change that can be reversed easily.

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

Is glass breaking a chemical or physical change?

• Chemical change

• Physical change

• Biological change

• Nuclear change

How are electromagnets different from regular magnets?

• Electromagnets can be turned on and off.

• Electromagnets are always magnetic.

• Electromagnets are made of permanent materials.

• Electromagnets do not require electricity to function.

What is an atom?

• The smallest particle of a substance that retains its chemical properties.

• The basic unit of a chemical element.

• A type of molecule that contains two or more atoms.

• A charged particle that results from the loss or gain of electrons.

Tags

NGSS.MS-PS1-1

What happens to the properties of a substance during a physical change?

• The properties remain unchanged and the substance is altered.

• The properties may change, but the substance remains the same.

• The substance is completely transformed into a different material.

• The properties change and the substance is destroyed.

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NGSS.MS-PS1-2

What type of charge does a proton have?

• Negative

• Neutral

• Positive

• Electromagnetic

What is the role of electrons in an atom?

• Electrons are positively charged particles that orbit the nucleus.

• Electrons are neutral particles found in the nucleus.

• Electrons are negatively charged particles that orbit the nucleus.

• Electrons are particles that do not play a role in atomic structure.