Unit 1
Properties of Solids
Definite Shape & Volume
Water’s ability to be attracted to other water molecules.
Cohesion
What is the charge of Nitrogen when it ionizes?
-3
The most recent era of time.
Cenozoic Era
The surface temperature on the planet Mercury can reach 800oF. Convert this temperature to degrees Kelvin.
699.7oK
Substances change states when they move between solid, liquid, and gas forms. When a substance changes from one state of matter to another, it has undergone_____
Physical Change
When Carbon Dioxide and Water are produced.
Combustion
How far does a train travelling at 100 miles per hour travel in 3.5 hours?
350mi
The law of superposition helps scientists to determine
Relative Age
What type of bond is SO?
Covalent
What two quantities must be known to calculate the density of a sample of matter?
Mass & Volume
True or False: Different substances can have the same properties.
True
P2O4
Diphosphorus Tetroxide
Type of radiation that is the same as an electron and is emitted from the nucleus.
Beta Particle
_K + _Cl2 ---> _KCl
2,1,2
The melting point of silver is 609oC. What is the temperature in degrees Fahrenheit?
1,128.2oC
Which gas law describes the relationship of temperature and pressure as directly proportional?
Charles Law
How many elements does PbNO3 have?
5
The half-life of a radioisotope is 2 days. What fraction remains after 6 days?
1/8
Which subatomic particle determines if the nucleus is stable or unstable?
Neutrons
In a lab, a scientist has a beaker of pure water and a battery at the bottom. When he places a lightbulb in the water, the lightbulb does nothing. He then adds salt to the water and places the lightbulb in the water with salt in it, then the lightbulb lit up. What physical property was produced in the water when salt was added to it?
Conductibility
Aspirin can be made in the laboratory through a series of reactions. If the actual yield for aspirin was 416.8g when the reactions were performed, and the predicted yield was 850g, what was the percent yield?
49.0%
Carbon Tetrachloride
CCl4
Length of time required for half of the radioactive atoms in a sample to decay.
Half- Life
A satellite has a left and right thrusters. The right thruster is exerting a force of 500N to the right. While the left thruster is exerting a force of 1000N to the left. In what direction and with how much net force will the satellite move?
500N to the left