Chemistry: Atoms Quiz

1. What is another name of a whole number?

a fraction
an Integer
a ratio

2. An irrational number...?

can be written as a fraction
cannot be written as a fraction
is the square root of a number

3. What is the acronym of the order of operations?

MASDOB
ASMBOD
BODMAS

4. What are the factors of 28?

1,2,4,7,14,28
1,2,5,7,9,28
1,2,3,4,5,6,28

5. Name the first 8 prime numbers?

2,3,5,7,11,13,17,19
2,4,6,8,10,12,14,16
1,2,3,4,5,6,7,8

6. What is the Least Common Multiple (LCM) of 12 and 15?

60
90
30

7. What is the Highest Common Factor (HCF) of 36 and 54?

18
19
20

8. Simplify 6/8?

3/4
4/3
1/2

9. Write 4 2/3 as an improper fraction?

12/3
14/3
2/3

10. What is 8/15 x 5/12 ?

2/9
9/2
4/2

11. What is 54.7651 to three significant figures?

54.5
54.8
54.76

12. What is 12/20 of £480?

£180
£280
£288

13. Write 190 as a fraction of 90?

18/8
19/9
19/6

14. what is 78/100 represented as a decimal?

0.78
0.89
1.78

15. What is 0.000453 represented in standard form?

`4.53*10^-4`
`45.3*10^-5`
`4.53*10^4`

16. What is 0.345 represented as a fraction?

345/100
345/1000
345/10

17. Write 0.16 as a fraction?

1/6
10/6
2/6

18. What is 8.347299 to 2 decimal places?

8.35
8.34
8.347

19. Express 35600 in standard form?

`35.6*10^4`
`3.56*10^4`
`3.56*10^-4`

20. What is `(9.8*10^4) + (6.6*10^3)`?

`1.046*10^5`
`104.6*10^5`
`1.046*10^6`