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Concept 2.1
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(3)
e. is a mixture of rock, sand and water
(2)
A. is a mixture of iron and other elements
(1)
B. Light up in the dark
Put true or false (4) Metals such as iron and copper allow heat to transfer through them freely.
True
Put true or false (3) No spaces are left between railroads tracks.
False
Put true or false (2) When a liquid is cooled, it may change into gas.
False
Put true or false (1) when mixing two substances with the different temperature, their avverage temperature is lower than their final temperature.
False
Arrange the three states of matter ( Solid - Liquid - Gas) in a descending order according to the force holding molecules together.
1) Solid 2) Liquid 3) Gas
It changes from solid state to liquid state
Because they are metals that allow the heat to transfer through their particles.
choose the correct answer
c. Gas
choose the correct answer
a. expand
choose the correct answer
c. Equal to
choose the correct answer
b. heat transfer from the sand to your feet.
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