Physical Science Unit 5

How are ionic and covalent bonds different?

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

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

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

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

When a group 7 element reacts with a group 1 element, what is the effect on the group 1 atom?

• It loses one electron.

• It gains one electron.

• It loses one proton.

• It gains one proton.

Tags

NGSS.HS-PS1-2

How many electrons are required to complete the outer energy level of a phosphorous atom?

• 3 electrons

• 5 electrons

• 2 electrons

• 8 electrons

Tags

NGSS.HS-PS1-1

What is the difference between carbon monoxide and carbon dioxide?

• Carbon monoxide has one oxygen atom, while carbon dioxide has two.

• Carbon monoxide has two oxygen atoms, while carbon dioxide has one.

• Carbon monoxide is a solid, while carbon dioxide is a gas.

• Carbon monoxide is a gas, while carbon dioxide is a solid.

Tags

NGSS.MS-PS1-1

Is a molecule of hydrogen chloride (HCl) polar or nonpolar?

• Polar

• Nonpolar

• Neutral

• Ionic

Which of the following is the reason why ions of sodium and chloride attract each other in a salt crystal?

• Sodium has a positive charge and chloride has a negative charge

• Same charges repel.

• They share electrons.

• They share protons.

Tags

NGSS.HS-PS1-3

Which of the following may be classified as a binary compound?

• Sodium chloride (NaCl)

• Water (H2O)

• Carbon dioxide (CO2)

• Sulfuric acid (H2SO4)

Tags

NGSS.MS-PS1-1

Ionic compounds are usually formed by ionic bonding between metals and nonmetals. Which of the following is not an ionic compound?

• Water (H2O)

• Sodium chloride (NaCl)

• Magnesium oxide (MgO)

• Calcium fluoride (CaF2)

The elements whose atoms are pictured above all belong to period 2 of the periodic table. It would require the greatest energy to remove an electron from which element?

• Li

• Be

• F

• Ne

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A chemical is the force that holds atoms together in a compound. What is this force called?

• Ionic bond

• Covalent bond

• Chemical bond

• Metallic bond

Tags

NGSS.HS-PS1-1