WorksheetsELEMENTS
Total questions: 10
Worksheet time: 8mins
What is the lightest element in the periodic table?
Helium
Hydrogen
Air
Neutrons
A human's thumb is as long as his or her nose -
True
False
What percentage of Water in the human body?
50%
66%
75%
80%
Which of these Metals is found in Hemoglobin, the Oxygen carrying protein that makes blood red?
Aluminium
Iron
Zinc
Sodium
What are the most common elements in the human body?
Phosphorus, Nitrogen, Calcium
Sulfur, Sodium, Magnesium
Copper, Zinc, Selenium
Oxygen, Carbon, Hydrogen
Carbon is the basis of life and organic chemistry. the symbol for Carbon is
Ar
C
Ca
Cr
___________ is found in your bones and teeth. The symbol is
C
Ca
Cl
Cm
How many total atoms are in a molecule of H2O?
0
1
2
3
An element is composed of _________
Compounds
Atoms
Molecules
None
Deficiency of which element will cause this effect
Iodine
Iridium
Indium
Iron
