Unit 1
Push or pull that acts on an object
Force
Opposite charges
Protons, neutrons, and electrons can be found in what?
Atoms
When 2 or more substances combine to create a new substance, EG
Chemical Reaction
Substances that have a sour taste?
Acids
Recourses that can be replaced in a short period of time?
Renewable Recources
Any material with a fixed volume, Eg
Solids
When an atom gains or loses an electron, it forms a ____
Ion
What is the law of conservation of mass?
Matter cannot be created or destroyed, it can only change form
(2)Slimey and slippery substances?
Bases
A nonrenewable resource that releases chemical energy when burned?
Fossil Fuels
4 universal forces
Electromagnetic, stong nuclear, weak nuclear, gravatational
What are the 3 classes of metals?
Metals, Nonmetals, and Metalloids
A reaction that releases heat, eg?
Exothermic Reaction
What happens when you mix an acid and a base?
They cancel out.
F=ma, Eg
Newton's 2nd Law of Motion
Ice -> Liquid
Water -> Steam
is an example of what?
Phase changes
This substance is a good conducter at certain temperatures, and forms the staircase on the periodic table
Metalloids
Define "surface area"
The size of the surface of all the particles that are able to react
What is the scale of how much H+ is in water?
2slimey is in a car traveling a distance of 100m in 4 seconds. What is his velocity?
V = 25 m/s
2slimey says that, according to the Kenetic Theory of Liquids, molecules of gas move slowly and are far apart from each other. Is he correct about both?
No, molecules of gas move quickly. But yes, they are far apart from each other.
All electron shells have how many electrons? (except for the first one)
8
Balance the following equation:
_ZN + _HCI -> _ZnCL2 + _H2
ZN + 2HCI -> ZnCL2 + H2
Water solution that dissolves ions in it?
Electrolyte