Atoms Basics | ||
#1 | What kinds of particles make up an atom?
|
a. protons, neutrons, and electrons |
#2 | Which part of an atom has the least mass?
|
B. an electron |
#3 | What are the main particles in the nuclus of an atom? |
Protons and Neutrons |
#4 | The electron cloud surrounding the nucleus of an atom...
|
C. is mostly empty space |
#5 | What are the charges of the particles in an atom? |
Protons = positive Electrons = negative Neutrons = neutral (no charge) |
Atoms Advanced | ||
#1 | How is the path of electron on your models different from an actual atom? |
Electrons travel in 3D paths in the electron clouds. |
#2 | About how much mass is in the electron cloud? |
Less than 1% |
#3 | The nucleus accounts for approximately what percentage of the total mass of an atom? |
99% |
#4 | Which particles determine an atoms charge? |
Protons and electrons |
#5 | How fast do electrons move? |
Near the speed of light |
States of Matter Basics | ||
#1 | How do the molecules of a solid move? |
They vibrate back and forth in one place. |
#2 | When energy is taken away, molecular motion...
|
a. Decreases |
#3 | Silver is a metal that can be melted to form jewelry. As the silver melts, what happens to the atoms that make up the solid?
|
B. They move faster |
#4 | When a substance changes from a solid to liquid to gas, the molecular motion... |
increases |
#5 | What causes matter to change from one state to another? |
Temperature (energy) Changes Heat/Cooling |
States of Matter Advanced | ||||||||
#1 | List the states of matter in DECREASING molecular motion |
Gas, Liquid, Solid |
||||||
#2 | What two states of matter do not change volume? |
Solid and liquid |
||||||
#3 | What is the most common state of matter in the universe? |
Plasma |
||||||
#4 | In which two phase changes involving water does the motion of water molecules INCREASE?
|
C. The melting of ice and evaportation of water |
||||||
#5 |
|
X = Gas Y = Solid Z = Liquid |
Periodic Table | ||
#1 | What are the elements in: CO2 |
Carbon and Oxygen |
#2 | What are the elements in: XeF4 |
Xenon and Fluorine |
#3 | What are the elements in: CaCl2 |
Calcium and Chlorine |
#4 | What are the elements in: 2AgNO3 |
Silver, Nitrogen, and Oxygen |
#5 | What are the elements in: CuSO4 |
Copper, Sulfur, and Oxygen |
Final Question | |
What are the number of protons, electrons, and neutrons (PEN) in the element Iodine? |
P = 53 E = 53 N = 74 |