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Unit 1A
Unit 1B
Unit 2
Unit 3
Unit 4
100
Write an if... then hypothesis from the following question: Does cutting your grass at a higher height make it grow better?
If you cut your grass at a higher height, then it will grow faster.
100
Convert 483,000,000 to scientific notation.
4.83 x 10^8
100
What are the measuring devices for the following measures: time, temperature, length, mass?
Time: stopwatch Temperature: thermometer Length: ruler Mass: balance
100
What are the 5 phase changes?
Sublimation, Melting, Freezing, Evaporation, Condensation
100
Which family has a full outer shell?
Noble Gases
200
What is the scientific method?
A way to ask and answer questions.
200
Convert 0.00000000483 to scientific notation.
4.83 x 10^-9
200
What are the units for the following measurements: time, temperature, length, mass
Time: seconds Temperature: Kelvin/Celsius Length: meters Mass: grams
200
Give me an example each of a heterogenous and homogeneous mixture and explain why!
Homogenous: Chocolate milk - all mixed together, uniform in composition Heterogeneous: Spaghetti and meatballs - chunks throughout, doesn't look the same everywhere
200
Explain why Cesium and Francium are in the same family and which family are they in?
Same number of valence electrons - 1 - Alkali Metals
300
Name and define the two types of variables in an experiment.
Independent - what the scientist changes Dependent - responds to the changes made by the scientist
300
Round the following number to the thousandths place: 0.989759384
0.990
300
How do you find the volume of each of the following: a brick, orange juice, a penny. What are each one's units?
Brick: ruler, lxwxh, cm^3 OJ: graduated cylinder, mL Penny: water displacement (graduated cylinder), cm^3
300
What is the kinetic theory of matter?
All matter is made up of tiny moving particles.
300
Which family will take electrons easily?
Halides
400
Which axis do the independent and dependent variables go on?
Independent - 'X' axis Dependent - 'Y' axis
400
How many significant figures are in the following number: 0.0010900
5
400
How do you find density and what are it's units? (i.e. what measuring devices do you need and what is it's formula?)
mass/volume - balance, graduated cylinder; g/mL OR g/cm^3
400
Describe Boyle's and Charles' Laws - talk about pressure, volume and temperature for each!
Boyle's: Increase Volume, Decrease Pressure, Temp Same Charles': Increase Temp, Increase Volume, Pressure Same
400
Draw a Bohr's Model AND Lewis Structure for Sulfur.
P: 16 N: 16 E: 16 Valence E: 6
500
What are the four types of graphs we talked about and when do we use each?
Pie Graph - to show percentages Line Graph - to show changes over time Bar Graph - to show numbers obtained from counting Scatter Plot - to show relationships
500
What is the difference between accuracy and precision?
Accuracy is getting close to a target, precision is hitting the same area over and over.
500
Convert 8,432 grams to pounds.
18.55 pounds
500
What is the difference between a chemical and physical change? Describe what happens to the molecules.
In a chemical change the molecules break apart and recombine. In a physical change they do not.
500
If I wanted to make a heavier cation of oxygen, how would I do it? How many protons, neutrons and electrons would I have?
Gain neutrons and lose electrons. Protons: 8 Neutrons: 9 Electrons: 7