Which of these will help to make a sugar cube dissolve more quickly in a cup of hot coffee?

• A. Stirring the hot coffee

• B. Adding more sugar cubes

• C. Adding ice to the coffee

• D. Pouring more coffee into the cup

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of these would slow down the rate of dissolving a sugar cube into a cup of coffee?

• A. Stirring the coffee

• B. Crushing the sugar cube into smaller pieces before putting it in the coffee

• C. Adding ice to the coffee

• D. Making sure the coffee is hot

Tags

NGSS.MS-PS1-4

What can Ms. Radulski do to a piece of paper to cause a chemical change?

• A. Cut it

• B. Draw on it

• C. Crumple it

• D. Burn it

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

A wax candle is melting. What type of change is it? What state of matter is it changing into?

• A. Physical change from a solid to a gas

• B. Chemical change from a solid to a gas

• C. Physical change from a solid to a liquid

• D. Chemical change from a solid to a liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the best way to remove the iron filings from the mixture of sand, salt, and iron filings?

• A. Use forceps to take out the iron filings

• B. Use a magnet to attract the iron filings

• C. Pour the mixture through a strainer

• D. Stir the mixture into water

What method would work best to separate a mixture of white rice and table salt?

• A. Use a strainer and separate the parts by particle size

• B. Use forceps to separate the rice from the salt

• C. Use a magnet to separate the table salt from the rice

• D. Pour the mixture onto black paper and separate the parts by shape

What type of change is a nail rusting?

• A. Chemical

• B. Electrical

• C. Nutritional

• D. Physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of these statements best describes the effect of temperature on chemical changes?

• A. Chemical changes generally happen faster at higher temperatures

• B. Chemical changes generally happen slower at higher temperatures

• C. Chemical changes are not affected by a change in temperature

• D. Chemical changes happen only if the temperature is very hot

Tags

NGSS.MS-PS1-4

Which of these statements is evidence of a chemical change?

• A. The bag expanded and bubbles formed in the bag

• B. A liquid combined with a solid

• C. The sand became wet when combined with vinegar

• D. The sand changed color after the liquid was added to the bag

Tags

NGSS.MS-PS1-2

True or False: There can be both a chemical change and a physical change observed simultaneously.

• True

• False