Weather
What type of weather does high pressure cause?
Sunny and fair weather
What are the names of the THREE subatomic particles?
Proton, neutron, and electron
What are the three groups of elements?
Metals, metalloids, and nonmetals
What is a force?
A push or pull
What subatomic particle identifies an element?
Protons
A person that studies weather.
A meteorologist
How do you calculate neutrons
Round the atomic mass to the nearest whole number and subtract the atomic number from the mass
The group number tells you what about an atom?
The number of valence electrons
A force is applied to an object that is not in motion and it does not MOVE, then that force is considered?
Balanced force
The substances listed on the left side of a chemical equation
Reactants
A cold front brings what type of weather?
Severe rain and a drop in air temperature (gets colder).
Think about what a molecule and a subscript are and then draw the following formula:
3H2O
O--H--O
O--H--O
O--H--O
What are three characteristics of a metal?
Shiny, good conductors of heat and electricity, malleable and ductile.
Potential energy is the energy an object has because of it's ____________(#1) and kinetic energy is the energy has because of it's __________(#2).
Write: #1 and #2 and fill in your answers
2. Motion
Is the chemical equation balanced?
2Fe2O3 + C ---> Fe + 3CO2
unbalanced
What happens to the land and coast when a hurricane makes landfall?
The hurricane causes a storm surge, which creates flooding. (Horrible weather)
NaCl, otherwise known as table salt, is an example of a?
A compound?
Where are metalloids located?
On the staircase
Where is potential energy at it's greatest?
The higher it is from the ground
Calculate the net force and direction:
50N <------------- OBJECT ------> 15N
35N <----
What happens to a hurricane when it makes landfall?
It becomes weaker.
List five pieces of evidence of a chemical reaction.
Unexpected temperature change, odor, precipitation, color change, and formation of gas (bubbles)
How can you tell an element's reactivity?
By the group number/valence electrons
Provide a short example of speed, velocity, and acceleration. Write
S
V
A
and then your example next to each acronym.
Answers may vary, but:
S = A dog runs at 30 mph
V = The horse galloped at 50 mph South
A = The driver stopped at the red light and then continued driving when the light turned green
List the charge, location, and mass (weight) of EACH subatomic particle.
Electron, electron cloud, 0 AMU
Proton, nucleus, 1 AMU
Neutron, nucleus, 1 AMU