Chemistry Review 24-25 10th

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

• molecule

• compound

• cell

• atom

Which subatomic particle has a positive charge?

• Neutron

• Photon

• Proton

• Electron

What is the atomic number of an element?

• Number of electrons

• Number of neutrons

• Number of isotopes

• Number of protons

What is the trend for atomic size as you move from left to right across a period in the periodic table?

• Atomic size fluctuates

• Atomic size remains constant

• Atomic size decreases

• Atomic size increases

How many periods are there in the periodic table?

• 7

• 12

• 5

• 10

What is the name of the group 17 elements in the periodic table?

• Halogens

• Noble Gases

• Alkali Metals

• Transition Metals

What is the maximum number of electrons that can occupy the s orbital?

• 8

• 4

• 2

• 6

What is the electron configuration of oxygen?

• 1s2 2s2 2p4

• 1s2 2s1 2p5

• 1s2 2s2 2p3

• 1s2 2s3 2p3

What is the process by which an atom gains or loses electrons to become stable?

• Protonization

• Ionization

• Electronization

• Atomization

What is the nomenclature for the ionic compound formed between sodium and chlorine?

• Sodium dioxide

• Sodium hydroxide

• Sodium chloride

• Chlorine sodium