Element mixtures and compounds

Question 1

Elements key features

Answer 1

-they contain one atom
-cannot be broken down into simpler substances
-all the ones we know of are listed in the periodic table of elements

Question 2

Compound key features

Answer 2

-atoms of different elements are chemically bonded together
-they are in specific proportions (eg H2O)
-its hard to separate them

Question 3

is it easy or hard to separate a compound

Answer 3

hard- usually needs a chemical reaction

Question 4

Mixture key features

Answer 4

-contains two or more substances (which could be elements or compounds) that aren’t chemically bonded together
-the element can be varying proportions
-they are usually separated easily without a chemical reaction

Question 5

Elements consist of what?

Answer 5

One type of atom only

Question 6

What is a compound made up of

Answer 6

two or more different elements

Question 7

Whats the difference between a mixture and compound

Answer 7

there isn’t a chemical bond between the different parts of a mixture.

Question 8

Is carbon dioxide an element, mixture or compound

Answer 8

a compound

Question 9

Is chlorine gas an element, mixture or compound

Answer 9

element

Question 10

Is air an element mixture or compound

Answer 10

mixture