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WorksheetsThe basis of chemical symbols
Total questions: 13
Worksheet time: 7mins
How many different TYPES of atoms are in H2O? 水中有几种类型的原子？
0
1
2
3
What elements make up a water molecule (H2O)? Choose all that apply. 组成水分子的元素有什么？多选题
hydrogen
nitrogen
oxygen
carbon
The blue numbers in the image below represent ________
chemical reactions
chemical symbols
subscripts
How many hydrogen atoms are in a glucose molecule (葡萄糖分子)?
1
3
6
12
What is the atomic mass of hydrogen?
1
1.008
hydrogen
H
What is the atomic number of oxygen?
8
16
oxygen
O
What is the atomic number of carbon?
6
12.01
carbon
C
What is the chemical symbol of hydrogen?
1
1.008
hydrogen
H
What is the 'stick' that 'glues' two hydrogen atoms together called? 把两个氢原子粘在一起的棒叫什么？
atom
molecule
chemical bond
symbol
The attractive force that holds two atoms of a compound together.
Chemical Bonds
Magnetism
Gravity
Weak Force
H
Hydrogen
Helium
Hi
Mercury
Carbon
Cr
Ca
C
Cn
Oxygen
Og
Ox
O
On
