1 & 2
Element or Compound: CO
Compound (Carbon Monoxide)
This mixture has the largest particles of the 3 that eventually settle over time. These particles pass though a filter.
Example: Soil in Water
Suspension
What is the equation for density?
Density = Mass / Volume
What is viscosity?
A liquid's resistance to flow.
What are 3 kinds of basic Polymers?
Slime, Rubber, and Plastic
A liquid has a definite shape and volume.
False,
A liquid has a definite volume, but it takes the shape of its container.
TRUE or FALSE:
Composite materials are made up of a single material that is made to be light and strong.
False.
They are heterogeneous mixtures of 2+ materials combined for useful properties.
An object with a higher density than the liquid it is in will...
Sink
Atoms that have gained or lost electrons are called.
Ions
Lose e⁻ → Cation (+ charge)
Gain e⁻ → Anion (– charge)
Hydrocarbons only contain which two elements.
Hydrogen and Carbon
How many Oxygen atoms are in Aluminum Nitrate, Al(NO3)3
9
This is a homogeneous mixture of dissolved particles (solute) that remain mixed in a solvent indefinitely. It also passes through a filter.
Example: Salt water
Solution
How many Sig Figs does 5,409.0 have?
5
The color on the visible spectrum with the longest wavelength is.
Red
Which one of the following compounds is not organic?
a) Glucose
b) NaCl
c) HC2H3O2
d) C2H6
NaCl
What is the transition from solid to gas.
Sublimation
This mixture has particles that are visible under a microscope that stay suspended indefinitely. It will also scatter light through the Tyndall Effect.
Example: Milk in Water
Colloid
All of these are characteristics of metals, EXCEPT.
a.) Lusterous
b.) Conductive
c.) Hard
d.) Ductile
c.) Hard
The slime became a non-Newtonian fluid and was able to hold its shape because its molecules formed a ______ shape.
Chain
Draw a propane lewis-structure (C3H8)
Mr. P will tell you whats what.
Why doesn't temperature change during a phase change?
The energy is being used to break down the bonds of the molecules.
A physical property meaning an objects ability to stretch and to return to its original form.
Elasticity.
What about the atomic make up of metals allow them to be conductive and malleable.
Electrons are not in fixed positions and are able to move. Electricity is just the movement of electrons.
What determined the color of the flame of the metal.
How far the electron travels when excited.
To round correctly while doing a multiplication problem you must.
a.) Round to the same amount of decimal points as the value with the LEAST amount decimal points.
b.) Round to the same amount of decimal points as the value with the MOST amount decimal points.
c.) Round to the same amount of sig figs as the value with the LEAST amount sig figs.
b.) Round to the same amount of sig figs as the value with the MOST amount sig figs.
c.) Round to the same amount of sig figs as the value with the LEAST amount sig figs.