Physical and Chemical Changes Quiz

How can physical and chemical changes be differentiated? Indicate whether the following descriptions represent physical or chemical changes. Cutting a piece of paper in half describes a __________ while burning paper describes a __________.

• physical change; chemical change

• chemical change; physical change

• physical change; physical change

• chemical change; chemical change

Tags

NGSS.MS-PS1-4

In science class, students are conducting an experiment in which they combine an odorless blue liquid at room temperature and an odorless yellow liquid at room temperature. What would be an indicator that a chemical reaction took place?

• The volume of the combined liquids increased.

• The color of the combined chemicals was green

• The combined chemicals smelled like rotten eggs

• The combined chemicals produced a liquid.

Tags

NGSS.MS-PS1-2

Mr. Bean, a 6th-grade science teacher, demonstrated an example of a physical and chemical change. After the lesson, Mr. Bean asked his students to list three examples of chemical changes on an index card. Which student's index card includes chemical changes only?

• Card A

• Card B

• Card C

• Card D

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following observations indicate that a chemical reaction has taken place? Select TWO correct answers.

• liquid water evaporating as a result of thermal energy from the sun

• two solutions being mixed together and a solid is formed

• condensation on the window of a house on a cold day

• a sugar cube dissolving after it has been dropped in a glass of water

• gas bubbles forming as a cake is baking in the oven

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student has a balloon with a small amount of baking soda in it. They fit the open end of the balloon over a graduated cylinder containing some vinegar. As they lift the end of the balloon, the baking soda pours into the vinegar causing bubbling and fizzing to occur. The student observes the balloon begin to "fill" up and the graduated cylinder is cold to the touch. Based on these observations, what can they determine about the new substance formed by mixing baking soda with vinegar? Select TWO correct answers.

• The color changed.

• An odor was produced.

• The temperature changed.

• A light was produced.

• A gas was produced.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Complete the following statement . In a __________________ no new substance is formed.

• chemical change

• physical change

• biological change

• nuclear change

• electrical change

Tags

NGSS.MS-PS1-2

Complete the following statement . In a __________________ a new substance is formed.

• chemical change

• physical change

• biological change

• nuclear change

• electrical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The image shows the temperature of a liquid before and after a mystery substance was added during an experiment. There were no heating or cooling elements involved in the investigation. Which of the following statements is true?

• The mystery substance dissolved.

• The increase in temperature is evidence of the change.

• The decrease in temperature is evidence of the change.

• The substance remained unchanged.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following are evidence that a chemical reaction has occurred? Select TWO correct answers.

• salt dissolving in water

• food being chewed into smaller pieces

• bubbles forming

• a solid forming after two liquids are combined

• water evaporating from a beaker

Tags

NGSS.MS-PS1-2

Which of these best demonstrates a chemical reaction has occurred? Select TWO correct answers.

• Water, lemon, and sugar stirred together

• Heating sugar to form caramel

• Water freezing into ice, then melting back into water

• A banana ripening

• Grinding black pepper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5