Unit 1 - What is Matter?
Hypothesis
A conditional if-then statement that is testable and tries to answer your research question
Water Displacement
A method of measuring volume where a measurement is made of how much the water level in a container rises when an object is placed in a container
Law
A statement of observed behavior. Often precedes theories
Scientific Method
A systematic approach to answering questions about scientific phenomena
SI System
Also known as the metric system, it is the set of scientific units used in measurement in science
Theory
An explanation of natural phenomena that answers the Why? question
Matter
Anything that has mass and takes up space
Quantitative Data
Measurements and other numerical values recorded during an experiment
Qualitative Data
Physical observations recorded during an experiment
Intensive Properties
Properties such as color, hardness, and melting point that depend on the type of matter, not on the amount or size of the sample
Extensive Properties
Properties such as mass or volume that do change depending on the amount of matter
Volume
The amount of space that something takes up
Mass
The amount of substance, or material, in an object
Dependent Variable
The condition that changes as a result of the change done by the person performing the experiment
Independent Variable
The condition that is purposely changed during the experiment by the person performing the experiment
Meniscus
The curvature of the top of a liquid in a container
Density
The mass of a substance per unit volume
Conversion Factor
The number you multiply by to convert between different units whose value is equal to 1
Chemistry
The study of what substances are made of, how they behave, and how they can be transformed
Control
Variables that are held constant during the experiment