Topic 5: Atomic Structure

Which of the following is not a particle found in an atom?

• neutron

• electron

• micron

• proton

What determines which kind of element an atom is?

• # of electrons

• # of neutrons

• # of protons

• mass number

Based on the picture, what is the atomic number of Aluminum (Al)?

• 26.982

• Al

• Aluminum

• 13

Tags

NGSS.MS-PS1-1

Based on the picture, what is the atomic mass of Aluminum (Al)?

• 26.982

• Al

• Aluminum

• 13

What is the atomic mass of an atom is equal to?

• # of protons + # of neutrons

• # of protons + # of electrons

• # of electrons - # of neutrons

• # of neutrons - # of electrons

What are atoms of the same element with a different number of neutrons called?

• ions

• metals

• compounds

• isotopes

What are atoms of the same element with a different number of electrons called?

• ions

• metals

• compounds

• isotopes