Vocabulary
An explanation that is based on prior scientific research or observations and that can be tested.
What is a Hypothesis?
anything that has mass and takes up space.
What is matter?
0.00203 in Sci. Notation
2.03 x 10-3
The number of centimeters in 1 m.
What is 100?
Out of the following this is not an example of matter: heat, vapor, soil, ocean water.
What is heat?
an explanation for some phenomenon that is based on observation, experimentation, and reasoning.
What is a Theory
A form of matter that does not have a definite volume or shape.
What is a Gas?
The significant figures present in the number 100,000.0
What is 7?
The number of um (micrometers) in 1 nm (nanometer).
What is 0.001?
This law states that matter/energy is never created or destroyed in a reaction.
What is The Law of Conservation of Mass/Energy?
A type of measurement that is descriptive and nonnumeric
What is Qualitative Data?
This type of matter is made from two or more elements in FIXED proportions.
What is a compound?
The expression of 0.00808 in scientific notation.
What is 8.08 x 10-3?
The ratio of the mass of a substance to the volume of the substance; often expressed as grams per cubic centimeter for solids and liquids and as grams per liter for gases.
What is density?
The point where all matter stops moving; the lowest point on the Kelvin Scale.
What is Absolute Zero
Having measurements that are close to each other (narrow and easily reproducible) but not necessarily close to the true value.
What is Precision?
Solid, liquid, gas and plasma.
What are the four phases of matter?
The number of sig figs in the number 1.00008.
What is 6?
The prefix represented by 10-9 magnitude.
What is nm or nanometers?
The conversion of 225 degrees Celsius to Kelvin.
498 K
a measure of the size of a body or region in 3 dimensional space.
What is Volume?
Energy changes accompany physical and chemical changes. Energy may be released or absorbed, but it is neither _______ nor ________.
What is created nor destroyed?
The answer of 10.00 x 0.1 using correct sig figs.
The answer to the following conversion:
Calculate the density of 0.001 kg of substance in 1000 mL of solution.What is 0.001 g/mL?
A figure that is calculated by subtracting the accepted value from the experimental value, dividing the difference by the accepted value, and then multiplying by 100.
What is percentage error?