7th Period Quiz - Chemistry

How close a measurement is to the accepted value is called..

• Accuracy

• Precision

• Significant

• Estimate

What is used to represent the number of particles in a substance?

• mole

• gram

• kelvin

• atmosphere

Avogadro’s number is:

• 6.02 x 10²²

• 6

• 6.02 x 10²³

• 3.01 x 10²³

The law of conservation of mass states that

• the mass of the products is greater than the mass of reactants

• the mass of the products = the mass of the reactants

• the reactants are less than the products

What is used to represent the number of particles in a substance?

• mole

• gram

• kelvin

• atmosphere

What is the equation to measure change in Thermal Energy?

• Q=mc∆t
• Q=mc
• Q= ∆mct
• m=QC

What is the symbol for Specific Heat

• Q
• t
• m
• C

What unit do you use to measure Thermal Energy?

• J/Kg ºC
• Kg
• ºC
• J

What is the symbol for Thermal Energy?

• Q
• t
• m
• C

The amount of energy required to raise the temperature 1ºC for every kilogram is called____?

• Thermal Energy
• Specific Heat
• Temperature
• Kinetic Energy