purity and mixtures

Question 1

what is a pure substance made up of?

Answer 1

only one type of particle but these particles could also be an element or a compound

Question 2

what is the fixed melting point of a pure substance?

Answer 2

0 degrees

Question 3

what is the fixed boiling point of a pure substance?

Answer 3

100 degrees

Question 4

what do you call a liquid which boils at exactly 100 degrees?

Answer 4

pure water

Question 5

what is a pure substance?

Answer 5

A pure substance is a substance that cannot be separated by physical means.

Question 6

what is a mixture?

Answer 6

a mixture is a material made up of two or more different substances which are mixed

Question 7

what determines the properties of a mixture?

Answer 7

the parts its made from

Question 8

what is one way of making a mixture?

Answer 8

dissolving

Question 9

what happens when you add a solid to a liquid?

Answer 9

the particles in the solute sometimes break

Question 10

what happens when the solute particles mix with the molecules?

Answer 10

forms a liquid solution

Question 11

what is arrangement of the particles in the solution?

Answer 11

random

Question 12

what is dissolving?

Answer 12

a physical change

Question 13

what happens when u evaporate solvent?

Answer 13

you then can see the solute (salt) again