2022 Physical Science Test

Why don't noble gases form bonds?

• Noble gases do form bonds

• They all have a full valence shell

• They only bond with each other

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

Tags

NGSS.MS-PS1-1

Predict the bond formed between Be and F

• Covalent-bond

• Ionic-bond

• Metallic-bond

• Hydrogen-bond

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the number of valence electrons of Oxygen?

• 1

• 2

• 6

• 8

What is a valence electron?

• an electron that is found in the outermost shell of an atom

• an electron found in the innermost shell of an atom

• an electron found in the middle shell

• an electon found in the nucleus

Name this element.

• Argon

• Chlorine

• Aluminum

• Boron

Tags

NGSS.MS-PS1-1

Chemical Equation

• A representation of a chemical reaction

• the starting materials in a chemical reaction

• the new substances that are formed in a chemical reaction

• tells how many atoms, molecules, or formula units take part in a reaction

Tags

NGSS.MS-PS1-5

Chemical Reaction

• a substance formed as a result of a chemical reaction

• a change in matter that produces one or more new substances

• the process in which substances undergo chemical changes that result in the formation of new substances

• a substance that enters into a chemical reaction

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

What are the coefficients that would properly balance this equation?

__AgNO₃ + __H₂S --> __Ag₂S+ __HNO₃

• 2,1 --> 1,2

• 1,2 --> 1,1

• 1,2 --> 1,2

• 1,2 --> 2,1

Tags

NGSS.MS-PS1-5

What coefficient should be used to make the following equation balanced?
N₂+O₂--> _NO 

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-5