NEW
Font size
WorksheetsGr.7 Chemistry Ch.9 quiz -3 2/11/2021
Total questions: 15
Worksheet time: 5mins
2. Which of these statements about elements is true?
an element cannot be split up into simpler substances by chemical reactions.
an element is split up into simpler substances by physical process.
an element can be split up into simpler substances by chemical reactions
3. Who introduced the symbols we use in chemistry today?
Lavoisier
H Davy
Jon Jakob Berzelius
4. What is the symbol for sodium?
Na
NA
S
so
1. What are the two elements that join together to produce water?
Hydrogen & osmium
Helium & oxygen
Hydrogen & oxygen
8. The old name of potassium is .....................................
Ketone
Kalium
Potash
Potassium
9. The symbol for potassium is ______
Po
P
K
k
10. The Latin name of iron is ____________
Ferrum
Forum
Ferrous
Heamatite
11. Symbol for iron is______
FE
I
Fe
Ir
12. Symbol for beryllium is______
Be
Br
B
b
13. Symbol for magnesium is______
Ma
M
Mg
m
14. Symbol for silicon is______
Si
si
S
15. Symbol for chlorine is______
C
Cl
CL
