Atomic Structure and Periodic Table Review

What is the difference between ionic and covalent bonds?

• Ionic bonds involve the sharing of electrons, while covalent bonds involve the transfer of electrons.

• Ionic bonds are formed between two nonmetals, while covalent bonds are formed between a metal and a nonmetal.

• Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

• Ionic bonds are weaker than covalent bonds and easily break apart.

Tags

NGSS.HS-PS1-3

What is the subatomic particle with a charge of 0?

• proton

• electron

• neutron

• positron

What type of change occurs when sodium metal burns in water?

• Physical Change

• Chemical Change

• Nuclear Change

• Biological Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is an isotope?

• Atoms of the same element with different numbers of neutrons.

• Atoms of different elements with the same number of protons.

• Atoms that have the same mass but different charges.

• Atoms that are chemically identical but physically different.

What is the charge of an electron?

• Positive

• Neutral

• Negative

• Variable

Tags

NGSS.MS-PS2-5

How many valence electrons does Phosphorus have?

• 3

• 5

• 4

• 6

Tags

NGSS.HS-PS1-1

What does the '-131' in Iodine-131 represent?

• atomic number

• mass number.

• neutron number

• electron configuration

What is a molecule?

• A single atom of an element.

• A group of atoms bonded together.

• A type of chemical reaction.

• A mixture of different substances.

Tags

NGSS.MS-PS1-1

How many valence electrons does Silicon have?

• 2

• 4

• 6

• 8

What is the charge of a proton?

• Negative

• Neutral

• Positive

• Variable