Second Semester Exam Review

Second Semester Exam Review

Assessment

Flashcard

Science

8th Grade

Practice Problem

Hard

Created by

Eartha McGoldrick

FREE Resource

Student preview

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50 questions

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1.

FLASHCARD QUESTION

Front

Is digesting food a chemical or physical change?

Back

Chemical. Enzymes in the stomach break down food into simpler substances by altering their chemical compositions.

2.

FLASHCARD QUESTION

Front

Describe two physical and two chemical properties of a copper penny.

Media Image

Back

Physical: Mass, volume; Chemical: Oxidizes to form green patina, reacts with strong acids

3.

FLASHCARD QUESTION

Front

Label the following changes in matter as physical or chemical.

1. Mixing salt and water.

2. Milk going sour.

3. Cooking an egg.

4. Breaking a rock with a hammer.

5. Burning coal.

Back

  1. 1. Physical
  2. 2. Chemical
  3. 3. Chemical
  4. 4. Physical
  5. 5. Chemical

4.

FLASHCARD QUESTION

Front

Explain why photosynthesis is a chemical change.

Media Image

Back

It uses light, water, and carbon dioxide to produce a new substance, glucose.

5.

FLASHCARD QUESTION

Front

How can you tell a chemical change has occurred?

Back

A new substance has been formed from the original reactants.

6.

FLASHCARD QUESTION

Front

Is the change when water boils and steam is produced a physical or chemical change?

Media Image

Back

Physical. Water and steam are both H2O. No new substance was created.

7.

FLASHCARD QUESTION

Front

Is baking cookies from cookie dough a chemical or physical change?

Media Image

Back

Chemical. The baked cookie has its own unique properties from the cookie dough, so it is a new substance.

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