Fast and Curious: Unit 7 Lesson 1 (Physical and Chemical Changes

What is the scientific definition for mass?

• Mass is the weight of an object.
• Mass is the speed of an object.
• Mass is the volume of an object.
• Mass is a body of matter.

What is the scientific defection of physical change?

• A physical change alters the chemical composition of a substance.
• A physical change is a change that affects one or more physical properties of a substance.

• A physical change involves a change in temperature only.
• A physical change is a permanent change that cannot be reversed.

What is the definition of interact?

• To analyze data without any interaction.
• To observe without engaging or communicating.
• To react with one another.

• To avoid contact with someone or something.

Tags

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What is the definition of indicate?

• To suggest.

• To confuse or mislead.
• To ignore or overlook.
• To summarize or condense.

What is the definition of physical change?

• A physical change occurs when one or more substances change into entirely new substances with different properties.

• A physical change alters the chemical structure of a substance.
• A physical change involves a reaction that produces a new substance.
• A physical change is a change that affects the temperature of a substance.

What is the definition of the Law of Conservation of Mass?

• In ordinary physical and chemical changes, mass is not created or destroyed but is only transformed into different substances.

• Mass is only conserved in physical changes, not chemical reactions.
• The total mass of reactants is always greater than the total mass of products.
• Mass can be created or destroyed in a chemical reaction.

Tags

NGSS.MS-PS1-2

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