Atomic structure

What is the charge of protons?

• Negative

• Neutral

• Positive

• No charge

What is the charge of neutrons?

• Negative

• Neutral

• Positive

• No charge

What is the charge of electrons?

• Negative

• Neutral

• Positive

• No charge

What is the nucleus of an atom described as?

• Light and airy

• Extremely dense

• Empty space

• Full of electrons

What is the main characteristic of electrons in the electron cloud?

• They are stationary

• They are 'massless'

• They are positively charged

• They are inside the nucleus

What changes in isotopes of an element?

• Number of protons

• Number of neutrons

• Number of electrons

• Atomic number

What is the atomic number of carbon?

• 6

• 12

• 13

• 14

Which of the following is true about isotopes?

• They have the same atomic mass

• They have different atomic masses

• They have different atomic numbers

• They have the same number of neutrons

What is the main difference between Carbon-12 and Carbon-14?

• Number of protons

• Number of neutrons

• Number of electrons

• Atomic number

What is the atomic mass of Carbon-14?

• 12

• 13

• 14

• 15