Choose the correct alternative.

1. What are the three states of matter?

solid, mixture, gas
solid, liquid, gas
mixture, liquid, gas
solid, liquid gas, mixture
mixture, solution, regular

2. What is the boiling point of water?

0 degrees Celsius
+ 0,1 degrees Celsius
+1 degrees Celsius
+10 degrees Celsius
+100 degrees Celsius

3. Ice is less dense than liquid water. What does this mean?

Lakes freeze at their bottom before they freeze at their surface.
The ice of a lake floats on top of its water.
It is impossible to skate on top of frozen lakes.
Ice melts quickly in water.
All the fish in the lake can breathe ice.

4. What does surface tension make possible?

for ice to float in water
for water to taste weird
for water to have a strong, film-like surface
for water to heat up quickly
for water to freeze quickly

5. How do fish breathe?

with their lungs
through their skin
with their gills
with their swim bladders
with their snorkels

6. What kinds of substances have dissolved into sea water?

various salts
various sugars
various fish
various types of water
various water colors