NGSS.MS-PS1-2

An example of chemical weathering is -

• Ice wedging

• Oxidation

• Animals burrowing

• Crashing waves

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NGSS.MS-PS1-2

Choose whether the following is a physical or chemical property: Reacts with oxygen

• Physical

• Chemical

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NGSS.MS-PS1-2

Which statement best describes what happens during a chemical change?

• Both the identity and the properties of a substance change.

• Some properties of a substance change, but its identity remains the same.

• The chemical properties of a substance change, but its physical properties remain the same.

• The physical properties of a substance change, but its chemical properties remain the same.

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NGSS.MS-PS1-2

Is this an example of a physical or chemical change?

• physical

• chemical

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NGSS.MS-PS1-2

When coal burns in air then

• Carbon dioxide is formed

• Sulphur dioxide is formed

• Carbon monoxide is formed

• Hydrogen gas is formed

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NGSS.MS-PS1-2

When sugar dissolves in water a ______________ change occurs.

• Physical change

• Chemical Change

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NGSS.MS-PS1-2

In short, the process of oxidation in chemical weathering, is the formation or what?

• rocks

• minerals

• rust

• dirt

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NGSS.MS-PS1-2

How do you rate your understanding of chemical reactions?

• Level 1

• Level 2

• Level 3

• Level 4

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NGSS.MS-PS1-2

Is burning wood a chemical or physical change?

• chemical
• physical

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NGSS.MS-PS1-2

A company that makes frying pans needs to create a new substance to coat the pans. The substance must have a high melting point. To create this new substance, workers mixed together two substances that melt at low temperatures in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances.

After mixing, the workers found two substances that melt at higher temperatures in the sealed container. (Nothing had escaped.) Which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances?

• 
• A

• B

• C

• D

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NGSS.MS-PS1-2