Mineral water is water that has different minerals dissolved in it. When a glass of mineral water is left out for a few days, crystals start to form on the glass. How many new substances are formed?
None - the crystals are the solid minerals separating from the liquid.
Oops!
Check
Okay!
Check
banana
Go to last place!
Oops!
gold
Win 50 points!
Okay!
shark
Other team loses 25 points!
Okay!
lifesaver
Give 5 points!
Oops!
15
Is this a physical or a chemical change: iron rusting
chemical
Oops!
Check
Okay!
Check
15
Sally weighs baking soda and vinegar and finds that it ways 50 g. She mixes them together and weights them again and finds that they now weigh 30 grams. Explain what happened.
The total amount of matter is still 50 g (due to the law of conservation of matter), but some of the gas escaped so it was not measured the second time.
Oops!
Check
Okay!
Check
baam
Lose 15 points!
Oops!
star
Double points!
Okay!
rocket
Go to first place!
Okay!
banana
Go to last place!
Oops!
15
Is this a physical or chemical change: wood rotting
chemical
Oops!
Check
Okay!
Check
15
Why is a tossed salad an example of a mixture?
Multiple things are mixed together, but each part keeps its own identity.
Oops!
Check
Okay!
Check
15
Is this a mixture or solution: metal alloys
solution
Oops!
Check
Okay!
Check
15
Which state of matter has a definite shape and a definite volume?
solid
Oops!
Check
Okay!
Check
15
If you put a drop of food coloring in water and don't mix it, why will all of the water eventually turn the color of the food coloring?
The water particles are constantly flowing so they move the color around with it until it is evenly spread out.
Oops!
Check
Okay!
Check
15
Is this a mixture or solution: cake mix
mixture
Oops!
Check
Okay!
Check
15
A stick of butter weighs 500 g. What will happen to the mass of the butter when it melts?