Elements, Compounds and Mixtures Flashcards

1

What is the chemical formula for Hydrochloric Acid?

HCL
CH4
NaOH
CO2

2

What does this diagram show?

pure element
mixture of elements
mixture of compounds
pure compound

3

A mixture contains ...

two different substances that are not joined together
two or more types of atom joined together
just one type of atom.

4

What does this diagram show?

pure element
mixture of compounds
pure compound
mixture of elements

5

Compounds contain ...

one element
two or more elements mixed together
three elements mixed together
two or more elements chemically joined together

6

How many atoms are there in total in one molecule of CaCO₃?

3
4
5
3

7

What does this diagram show?

none of these
mixture of elements and compounds
mixture of compounds
pure compound

8

What does this diagram show?

mixture of compounds
pure compound
pure element
mixture of elements

9

Is water an element, compound or mixture?

none of these
mixture
compound
element

10

Is this an element, compound or mixture?

element
mixture
compound
none of these

11

What is the chemical formula for Carbon Dioxide?

HCL
NaOH
CO2
CH4

12

Is this an element, compound or mixture?

none of these
compound
mixture
element

13

How many hydrogen atoms are there in water (H2O)?

3
4
1
2

14

A compound contains ...

just one type of atom.
two or more types of atom joined together
two different substances that are not joined together

15

When two of the same atoms are joined together...

a compound forms
a molecule forms
a mixture forms
an element forms

16

An element contains ...

two or more types of atom
two or more types of atom joined together.
just one type of atom
two or more substances that are not joined together.

17

How many atoms are there in total in one molecule of H₂O?

2
1
3
4

Elements, Compounds and Mixtures

Questions 17

Elements, Compounds and Mixtures

Questions 17