7.6C Retest Ticket

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

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What is a physical change?

Back

A physical change is a process that alters the form or appearance of a substance but does not change its chemical composition.

Front

Example of a chemical change: Hydrochloric acid reacts with potassium hydroxide.

Back

This reaction produces a salt, water, and heat, indicating a chemical change.

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Is milk going sour a physical or chemical change?

Back

Chemical change, as it involves the transformation of milk into different substances.

Front

What happens when sodium hydroxide dissolves in water?

Back

This is a physical change because the sodium hydroxide retains its chemical identity.

Front

Is the souring of milk a physical or chemical change?

Back

Chemical change, as it results in new substances being formed.

Front

What occurs during digestion in the stomach?

Back

Digestion is a chemical change where food is broken down into simpler substances.

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What is an example of a physical change?

Back

Melting ice is a physical change because it changes from solid to liquid without altering its chemical structure.

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What are indicators of a chemical change?

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Indicators include color change, temperature change, gas production, and formation of a precipitate.

Front

What is the difference between a reactant and a product?

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Reactants are substances that undergo a chemical change, while products are the new substances formed as a result.