unit 1B element, compound and mixtures

Question 1

what is a element?

Answer 1

is a substance
* that cannot be broken down chemically
* is made up by one type of atom**

Question 2

what is a compund ?

Answer 2

• that is made from two or more element chemically combine
• the element are combined in a fixed ratio

Question 3

what is a mixture?

Answer 3

is a substance
* thats is made from two or more element/compound joined together but not chemically combine
* the ratio of constituents is not fixed

Question 4

what happens when iron and sulfur are heated together?

Answer 4

black solid is produced

Question 5

what happens when sodium and chlorine are heated together?

Answer 5

white solid is produce