Africa Exams
Your Academic Best Friend Across Africa
Home
Ghana
Ghana BECE Exams
Kenya
Kenya KCPE Papers
Kenya KCSE Papers
Kenya KASNEB Papers
Nigeria
WAEC Exams
JAMB Exams
Rwanda
Rwanda Primary Papers
Rwanda Secondary Papers
Uganda
Uganda PLE Papers
Uganda UCE Papers
Uganda UACE Papers
More
About
Contact Us
Our Apps
Privacy
Test Index
BECE Science 2021 Paper
Show Para
Hide Para
Share question:
© africaexams.com
Question : 1
Total: 40
Which of the following substances is a compound?
Oxygen
Magnesium
Water
Sodium
Validate
Solution:
A compound consists of two or more different elements chemically combined in a fixed ratio. Oxygen,
magnesium and sodium are all elements but water is a compound made up of hydrogen and oxygen
(
H
2
O
)
© africaexams.com
Go to Question:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Next Question