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Chemical/Physical Change
Atoms
Periodic Table
Compounds
Physics
100
What are the signs of a Chemical Reaction?
Color change, Temperature change, Precipitate Formation, Odor change, Gas production
100
What determines an element's identity?
Protons.
100
What does the period number tell you?
The number of Energy levels in the element.
100
If there is no coefficient- how many molecules are in that compound can you assume?
1 molecule
100
When an object is acted on by an Unbalanced force, it will always ___________.
Accelerate.
200
What determines an elements Chemical Properties?
Valance Electrons
200
How do you find the mass of an atom?
Add up the Protons and Neutrons
200
Is group 1 made of metals or non-metals? (Not counting Hydrogen)
Metals
200
How can you tell if an equation follows the Law of Conservation of Mass?
It is balanced.
200
What causes a moving object to stop on Earth?
Friction.
300
What element has similar Chemical Properties to sodium?
Potassium
300
Where is most of the volume of an atom found?
In the Electron cloud
300
How reactive is Group 1?
Extremely Super Duper Reactive.
300
What is this molecule? H-H-O
H2O- Water
300
What would happen to you if your car suddenly stopped?
You would fly forward.
400
Milk Sour is an example of a __________ change.
Chemical
400
What do protons and electrons have in common?
They both determine an elements charge.
400
Which group does not react with anything?
Group 18- noble gases.
400
What is this drawing's chemical formula? H-H-O + H-H-O + H-H-O
3H20- 3 molecules of Water
400
On a track, where would the object be accelerating (if going at a constant speed)?
At the curves- Changing direction
500
Why is milk souring chemical?
A new substance is produced- you can't get the milk back.
500
T or F: The mass of Protons and Neutrons are the same. They are both bigger than electrons.
True.
500
In Period 3- what element has the greatest amount of Valence Electrons? Metal or Non-Metal?
Argon- Non-Metal
500
O-O + O-O + O-O + 4Fe --> 2Fe + 2O3 is the chemical formula for what compound?
Rust
500
What is the acceleration of an object that changes speed every second from 0 m/s to 10 m/s to 20 m/s to 30 m/s?
Acceleration is 10.