Bonding Chemistry

A covalent bond is

• a bond that shares electrons metallicaly

• A bond that shares electrons with non metals

• Metalloids bonding

• metals and nonmetals bonding

Tags

NGSS.HS-PS1-1

Why do all bonds form?

• so the number of protons equals the number of electrons

• so an atom can become unstable

• to fill the outermost energy level

How many elements are represented in the compound?
Na₂CO₃

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

What is the left part of a chemical equation called?
H_{2 +} O → H₂O

• Reactants

• Products 

• Yields 

• Chemical Equation 

Tags

NGSS.MS-PS1-1

A researcher combines 37 grams of iron with 16 grams of oxygen. Based on the Law of Conservation of Mass, what will be the resulting mass of the product?

• 16 grams

• 21 grams

• 37 grams

• 53 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many atoms are in one formula unit of the compound FeC₅O₅?

• 5

• 11

• 15

• 26

Tags

NGSS.MS-PS1-1

What classifies a substance as a mixture?

• Made up of two or more substances that are chemically bonded. 

• One substance that can not be physically separated 

• Two or more substances that are not chemically bonded.

• A substance that can not be seperated 

What type of bond involves the sharing of electron pairs between atoms?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

Which of the following is a characteristic of ionic bonds?

• They involve the sharing of electron pairs.

• They occur between metals and nonmetals.

• They are formed by the overlap of atomic orbitals.

• They are weaker than hydrogen bonds.

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

In a metallic bond, what is the nature of the electrons?

• Localized between two atoms

• Shared between a metal and a nonmetal

• Delocalized and free to move

• Held tightly by individual atoms