Human Body and Chemistry Quiz

What four elements make up 96% of the human body mass?

• Oxygen

• Carbon

• Hydrogen

• Nitrogen

What is the smallest unit of an element that retains its properties?

What charge does a proton carry?

What is the sum of protons and neutrons called?

Which model represents electrons in defined circular orbits?

What is the outermost occupied energy level of an atom called?

What is the octet rule?

Which type of chemical bond is formed by electron transfer?

Which type of bond involves sharing of electron pairs?

What type of covalent bond has unequal electron sharing?