Bending a paper clip is an example of a physical or chemical change?
Physical change
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boom
Lose 50 points!
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seesaw
Swap points!
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shark
Other team loses 25 points!
Okay!
thief
Give points!
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15
3 syringes (see pic) are filled with a solid, liquid, and gas. Which syringe will be the easiest to press/ push down?
Syringe filled with a gas
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15
In which object will 15 mL of water evaporate the fastest?
Petri dish
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15
Which state of matter (see drawing) has the most energetic/ fastest moving particles?
Gas
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20
When dry ice sublimates, it turns from solid into gas. This is an example of a physical or chemical change?
Physical change! All changes in state are physical changes!
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banana
Go to last place!
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magnet
Take 15 points!
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rocket
Go to first place!
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baam
Lose 15 points!
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20
The particles of a substance added to water looked like this. Did the substance dissolve? Why?
It's insoluble - the particles did not spread out to the other areass
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15
Heat expansion - when an iron bar is heated, it's length increases. Which picture (A or B) demonstrates heat expansion?
Picture A. Distance between particles increase when matter is heated
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15
True or False: During boiling, the bubbles are empty spaces only; they do not contain anything
False - bubbles have water vapor inside
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20
Does adding salt make water boil faster? In this experiment, the amount of water used is which type of variable?
Controlled variable
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20
Complete the quote related to states of matter: "Put __ in a cup, it becomes the cup. Put __ in a bottle, it becomes the bottle. Now, __ can flow or it can crash. Be __, my friend."
water (if you answer liquid, it's OK)
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15
Complete the words: In a ____ change, a new substance is formed