Chemical symbols and formulae Quiz

Which compound is commonly known as water?

• H₂O

• CO₂

• NaCl

• MgO

The role of subscripts in chemical formulas is to (a)   .

• To indicate the type of bond
• To show the number of atoms
• To represent the molecule's shape
• To denote the molecule's color

What is the role of protons in the nucleus?

• They determine the atom's color

• They determine the atom's type

• They determine the atom's temperature

• They determine the atom's size

What is the charge of a proton compared to an electron?

• Both are positive

• Both are negative

• Proton is positive, electron is negative

• Proton is negative, electron is positive

The particle in the nucleus that has no electric charge is (a)   .

Which particle is found in the nucleus and has a positive charge?

• Neutron

• Electron

• Proton

• Neutrino

Which of the following particles is not found in the nucleus?

• Proton

• Neutron

• Electron

• Quark

The charge of an electron is (a)  

What is the significance of the electron's mass being 0.00054 amu?

• It is heavier than a proton

• It is almost negligible

• It is the same as a neutron

• It is twice the mass of a proton

What is the charge of an electron?

• Positive

• Negative

• Neutral

• Double positive