Matters
Density & Attractions
Elements
Interactions
Acids & Bases
100
What is matter?
Takes up space and has volume.
100
Density is ______ (math term and layman term)
Mass over Volume; How much stuff is in a volume.
100
Who came up with the Periodic Table?
Dimitri Mendeleev
100
Ice cream melting in the oven is _____________ change.
Physical
100
What happens when an acid and a base come in contact with each other? Choose as many correct answers as are applicable.
Neutralization occurs.
200
Matching:
A. Gas 1. has a definite volume and shape.
B. Solid 2. flow into the shape of its container and has definite volume
C. Liquid 3. has no definite volume and fills the entire space.
A - 3, B - 1, C - 2.
200
______________ is how particles of a gas fill a room.
Diffusion
200
What are proton, neutron, electron numbers?
Proton: 12, Neutron: 12, Electron:12
200
Name 3 evidences of chemical changes
fizzing/bubbling, color, solid (precipitation)
200
A substance that changes color when exposed to acid or base solutions is called a(n) __________.
Indicator
300
Which state of matter is made up of atoms that are freely moving around, expanding to take up as much space as is available?
Gas
300
What is the method used to measure the volume of irregular shape objects?
Water displacement method
300
What are the two subatomic particles would you find in the densest part of an atom?
Protons and Neutrons
300
Lavoisier discovered Law of __________________.
Conservation of Mass
300
Soap turns __________ in red cabbage indicator, so it is considered base.
Green
400
What is a gas which condenses to form clouds?
water vapor
400
________ describes the attractive forces between the same kind of molecules or atoms.
Cohesion
400
What are these called?
Lithium isotopes
400
A ___________ speeds up a reaction without taking part in it.
Catalyst
400
If I have a stomach pain, which of the following should I take?
A. Vinegar
B. Baking Soda
C. Apple Juice
Baking Soda
500
The process by which a solid becomes a gas directly is called ______________
Sublimation
500
What does a surfactant do? (like detergent)
Lower the surface tension of liquids
500
Close your eyes and name all elements 1-18.
H, He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar
500
Balance the equation:
C3H8 + 5O2 ---> 4H2O + 3CO2
500
How many times more acidic is Battery vs. Tomato?
104 = 10000