Nature of Science
Scientific Notation
Measurement
Density
Temperature & Heat
100
True or False
-The main goal of science is to comprehend how the natural world works.
True!
100
True or False
- If the number is larger than one, the exponent will be negative.
False
- Will result positive
100
True or False
- The volume of gas is usually measured in units of grams.
False
- Usually measured in cubic meters.
100
True or False
-The density of a substance is determined only by its mass & Volume, no matter its chemical makeup or physical state.
False
-Its by mass divided by volume.
100
True or False
- Heat goes from a substance with high temperatures to one with lower temperatures, resulting rise in heat energy.
True!
200
Vocab -
Variable ____
Control _____
Observation ____
Vocab
Variable (A factor that can alter the change of an experiment)
Control (The part of the experiment that does not change, allows us to see what happens when we make changes)
Observation (Watching something closely to see what happens)
200
Vocab -
Standard form ____
Base ____
Exponent ______
Vocab -
Standard form (A way of writing numbers using powers of 10 to show extremely large or small numbers)
Base (A initial number that is multiplied by a exponent)
Exponent (Small number above the base that indicates how many times the base will be multiplied by)
200
Vocab -
Molarity ____
Precision ___
Accuracy ___
Vocab -
Molarity (Represents a number of moles in a solute dissolved in a solution)
Precision (How close in comparison to other repeated measurements)
Accuracy (Measurement of true value of closeness to the true value)
200
Vocab -
Density ____
Mass ____
Volume ____
Vocab -
Density (How much mass is packed into space)
Mass (The amount of matter in an object or substance)
Volume (Amount of space occupied by and object)
200
Vocab -
Endothermic ____
Exothermic ___
Thermometer ____
Vocab -
Endothermic (Process/Reaction of absorbing heat)
Exothermic (Process/Reaction of releasing heat)
Thermometer (Device used to determine temperature)
300
Fill in the blank
-A scientific theory is something that answers the --- and it has been tested repeatedly.
The "Why"
300
Fill in the blank-
- The mass of and electron is approximately 9.109 x 10?--- Kg
Fill in the blank-
-31
300
Fill in the blank
- The atomic mass of "C" is about --- atomic mass units.
Fill in the blank
- 12!
300
Fill in the blank
- The density of something is a measure of how much --- is in a certain amount of space.
Fill in the blank
- "Mass"
300
Fill in the blank
- Heat transfer happens when there is a temperature difference, moving from regions of extreme heat to low temperatures, This is know as -----.
Fill in the blank
- Heat transfer or Heat flow
400
Multiple Choice - The first step of Scientific Method Is?
A- define the problem
B- form a hypothesis
C- make observations
D- draw conclusions
The first step of Scientific Method Is?
A- define the problem
400
Multiple Choice - How would you write 4.3756 x 104 in standard form?
A- 4,3756
B- -47,560
C- 43,756
D- 0.00043756
How would you write 4.3756 x 104 in standard form?
C- 43,756
400
Multiple Choice - What unit of measure is for liquids?
A - Meters
B - Degrees
C - Grams
D - Liters
What unit of measure is for liquids?
D - Liters
400
Multiple Choice - What factor affects the density of a substance?
A - Volume
B - Temperature
C - Texture
D - Color
C -
What factor affects the density of a substance?
A - Volume
400
Multiple Choice - What is heat, and what does temperature measure?
A- Heat is the transfer of energy between chemicals, and temperature is a measure of the typical speed of particles.
B- Temperature and heat are similar words.
C- Heat & Temperature have no relation.
D- Heat measures the amount of energy in a substance, and heat measures the difference in temperature between things.
What is heat, and what does temperature measure?
A -Heat is the transfer of energy between chemicals, and temperature is a measure of the typical speed of particles
500
Short Response -
What is a hypothesis?
a hypothesis is a testable claim that makes a prediction or an explanation based on first results.
500
Short Response -
Define Scientific Notation?
Scientific notation is a way to express numbers as the product of two numbers.
500
Short Response -
How is scientific notation used with chemistry, and how does it help?
Short Response -
By representing numbers as a coefficient multiplied by a power of 10, Making it easier to represent very big or small numbers in measurements and easier to calculate numbers while scientist commonly compare numbers.
500
Short Response -
What is density, and how do we calculate it?
Short Response -
Density describes how much stuff is packed into a certain area of space, and calculated by dividing mass of an object my its volume.
Refer to - 
500
Short Response -
What most is the what separates between temperature and heat, and how do they connect with the flow of thermal energy?
Short Response -
Heat is the transfer or thermal energy between materials as a result of temperature difference, whereas temperature is a measure of the average kinetic energy of particles in a substance.