Definitions
Observations made using numbers or measurements
What is a quantitative observation?
Conclusions based on observations, previous knowledge and available information
What is inference?
The type of data you can graph
What is quantitative?
Anything that has mass and takes up space
What is matter?
Any characteristic of a substance that can be observed or measured without changing the composition or the identity of a substance
What is a physical property?
An observation made using the 5 senses
What is a qualitative observation?
What is density?
The standard set of units used by scientists
What is the metric system or the SI (Systeme International d'Unites)?
How we classify matter
What is how it behaves or by properties?
A reversible physical change that occurs when a substance changes from one state of matter to another.
What is a phase change?
A tentative explanation for an observation
What is a hypothesis?
Movement in gases and liquids that spreads out particles
What is diffusion?
What are tables and graphs?
The state of matter in which a substance has a definite shape and volume.
What is a solid?
Those properties that are measured or observed when matter undergoes a change and becomes and entirely different kind of matter.
What are chemical properties?
Any factor that changes in an experiment
What is a variable?
The ability of one substance to dissolve in another
What is solubility?
What is the independent variable?
The state of matter in which a substance has neither a definite shape or a definite volume
What is a gas?
What are flammability and reactivity?
The physical property of a liquid to resist flow
What is viscosity?
How many grams a person has if their mass is 75 kg
What is 75,000 grams?
The energy something has due to its motion
A change in color, a production of a gas or the formation of a solid
What are some clues for recognizing chemical changes?