Chemical

What is the chemical symbol for gold?
Au
Ag
Fe
Cu
Which of the following elements is a noble gas?
Helium
Oxygen
Neon
Nitrogen
Argon
What is the pH value of a neutral solution?
7
5
10
14
Which element is the most abundant in the Earth's atmosphere?
Nitrogen
Oxygen
Carbon
Hydrogen
What is the chemical formula for water?
H2O
CO2
NaCl
CH4
Which of the following is an example of an organic compound?
Glucose
Sodium chloride
Ethanol
Carbon dioxide
Methane
What is the atomic number of carbon?
6
8
12
16
Which gas is responsible for the greenhouse effect?
Carbon dioxide
Oxygen
Nitrogen
Methane
What is the chemical formula for table salt?
NaCl
H2O
CO2
CH4
Which element is essential for human bone health?
Calcium
Iron
Sodium
Potassium
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