Chemistry Check Up!

The number of particles in a given volume is the ___________

• Number

• Amount

• Concentration

• Area

In Diffusion particles spread out from a ………………. concentration

• Low

• Small

• Medium

• High

The rate of diffusion depends upon the _______ of particles and _________

• Size, Volume

• mass, temperature

• Temperature, Energy

• Mass, density

At which temperature will diffusion happen SLOWEST?

• 25 degrees

• -25 degrees

• 50 degrees

• • -50 degrees

Which of the following particles would diffuse fastest?

• H2

• O2

• N2

• C

Which of the following would diffuse SLOWEST?

• N2

• O2

• C

• SO2

What is the molecular mass of CO2?

• 22

• 28

• 36

• 44

Which element is found in period 3 and group 4?

• P

• Ge

• Si

• Al

How many electrons in the outermost shell of Cl?

• 2

• 4

• 7

• 8

Isotopes have...

• same protons and same electrons

• same protons and same neutrons

• same protons and different electrons

• same protons and different neutrons