Chemical Tests

Alan went to the car wash. Did Alan use chemicals during his day?

• Yes

• No

Which of the following is an observation?

• I think it will be sticky in water.

• Stir the powder in warm water.

• The powder is soft and white.

• Use the dropper to add water.

Which of these helps a student find out about color?

• Hearing

• Seeing

• Tasting

• Touching

Tags

NGSS.MS-LS1-8

Which best protects your eyes in science lab?

• Safety goggles

• Ski goggles

• Sun visor

• Sunglasses

Jenna put a matching colored dot on each jar and its cap. Why?

• There is no real reason.

• Color is important. It's a chemical property.

• Jenna wanted to avoid contamination.

• Jenna thought they looked pretty.

Lamar dropped iodine onto a mystery powder. He is testing for a starch. The test is positive. What does Lamar see?

• Purple-black color

• White crystals

• Yellow crystals

• Yellow-brown color

Tags

NGSS.MS-PS1-2

Which is an example of a solution?

• Soda

• Fresh apple

• Green salad

• Vegetable soup

Ken mixed cornstarch and water. Which of the following is true about a suspension?

• Liquid and solid mix completely.

• Liquid appears cloudy and separates.

• The liquid is clear.

Which helps us work safely while performing chemical tests?

• Red cabbage juice, iodine, and vinegar

• Sugar, talc, and baking soda

• Goggles, pail of water, hair tied back

• Filters, funnels, and petri dishes

What is it called when a scientist THINKS something might happen?

• A. A conclusion

• B. A prediction

• C. A condensation

• D. A summary

Tags

NGSS.MS-LS2-2