Temperature Change
When molecules are heated, they have more energy,so the move______
faster
What are the three states of matter?
Solid, liquid, gas
Water is unlike other matter because when it is cooled to freezing it_______
Expands
How can you give molecules more energy?
HEAT IT UP
Generally, when molecules are cooled, do they expand or contract
Contract
Which state of matter remains a fixed sharp and does not take the shape of its container?
Solid
True or False: Water in its liquid form has less volume than water in its solid form.
true
Water can not be used in thermometers because__________________.
It freezes at 0 degrees
Heating a liquid increases its temperature, causing the particles to change into a ________
gas
Which state of matter do molecules vibrate and spread out the most?
gas
What temperature does water reach when it starts to boil?
100 Degrees Celcius
What is one important way deck builders prepare for the changing seasons
Lease space for wood and building materials to expand and contract
True or False: All materials expand and contract at the same temperatures.
False
Why did the ballon on the top of a bottle expand in our experiment?
It was placed in hot water and the air molecules that were inside the bottle started expanding, gaining energy and speed.
What shape do water molecules form when water freezes?
Diamond
Thermometers use ______________ because it expands when heated and contract when cooled to measure temperature.
Isopropanol, alcohol, mercury(banned becuase it highly toxic)
What effect does cooling a liquid have on molecule movement?
Slows down
False
What changes?
Why is it important, in aquatic life, for ice to float?
If ice sank, all living things in water would freeze to death and be squished by ice. Ice would sink to the bottom and keep freezing each layer the is newly exposed.
What is the coldest temperature possible called? or what is the temperature
Absolute Zero, -273