Properties of Water and Law of Conservation of Mass

How many elements does PbNO₃ have?

• 2
• 3
• 4
• 5

Tags

NGSS.MS-PS1-1

How many nitrogen atoms does NH₃ have?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

What is the reactant in the following equation?
2NaHCO₃  -> Na₂CO₃  +  CO₂  + H₂O

• NaHCO₃
• Na₂CO₃
• CO₂
• H₂O

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Match the following

• CH4

• Product

  Compound

• CO2

• Reactant

  Element

• 2C2

• Reactant

  Compound

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 

• 4g
• 5g
• 9g
• 14g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Attraction between molecules of the same substance is known as (a)   .

• Buffer
• Adhesion
• Hydrogen Bond
• Cohesion

Attraction between differnt kinds of molecules.

• Cohesion

• Carbon Bond

• Hydrogen Bond

• Adhesion

Substance that is dissoved in a solution.

• Base

• Solute

• Solvent

• Suspension

Dissolving substance in a solution.

• Acid

• Solute

• Solvent

• Suspension

Scale with values from 0 to 14, used to measure the concentration of H+ ions in a solution.

• Hydrogen Bond

• pH Scale

• Acid

• Base