Chem

Kinetic/Potential Energy

100

Kinetic energy is directly related to...

Temperature

200

True or False: 

As potential energy decreases, particles get closer together.

True

300

Do phase changes happen when kinetic energy or potential energy is increasing? (Think of a temperature vs time graph)

Potential 

400

Is a system more likely to change (such as from liquids to gases in PEC diagrams) with low or high potential energy? 

Low

500

As particles repel, potential energy decreases/increases and when they seperate kinetic energy is gained/lost.

a) decreases; lost

b) decreases; gained

c) increases; gained

d) increases; lost

B - decreases; gained

Mass Spec

100

How many protons are in this element:

²¹₁₀X

10

200

Find the molar mass C₁₀H₆Cl₈

409.78g

300

If you lose e^- then you have a __ charge

+1

400

True or False:

Ions of the same element have the same number of protons in the nucleus, AND the same number of Neutrons. 

False, they have different numbers of neutrons. 

500

In a mass spec graph, what do the peaks that aren't the main/biggest one represent?

Fragments/Ions 

Gas Models

100

What is the ideal gas model? 

PV=nRT

200

If mass decreases then pressure...

Increases

300

True or False: 

Particles become gases at low temperatures and low pressures

False

Particles become gases at HIGH temperatures 

400

During a phase transition, particles move ____ as potential energy decreases

A) Further apart

B) Closer together 

C) In the same direction

B 

500

Picturing a temperature VS time graph, what two things directly affect potential energy? 

Phase changes and particle attractions 

Conversion Calculations

100

1 kJ is how many Joules?

1000 Joules

200

What power of 10^x is mega

6

300

Convert 2.50 liters to milliliters 

2500 mL

2.5 L x 1000mL/1L

400

How many molecules of glucose (C₆H₁₂O₆) are in 15.0 g of glucose? 

5.02 x 10^22 molecules 

15 g x 1mol/180g = 0.0833 mol

0.0833 x (6.02x10^23) = 5.02 x 10^22 molecules 

500

A bond requires 400 kJ/mol to break.
What wavelength of light is needed?

300nm (3.00x10^-7m)

Electromagnetic Ratiation

100

As frequency of a wave increases, energy....

increases

200

In the equation E=hv, h = 6.626x10^-34 which is known as...

Planck's Constant

300

If an object absorbs all but blue light, what color will the object be?

Blue

400

If an object absorbs only purple what color will the object appear as? (think complementary colors)

Yellow

500

What is the energy of light with frequency 5.0×10¹⁴ Hz?

3.3^-19J