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What is the scientific method?
A step by step process to preform an experiment objectively.
How many steps are in the Scientific method?
6
What type of change occurs when the chemical and molecular identity are UNchanged
physical change
What is the 2nd step of the scientific method
Background research
What is the 5th step of the scientific method?
Analyze data / form a conclusion
What is a control variable
the things we keep the same
What is a reactant?
substance undergoing change
What are the 2 types of data we can collect in an experiment? What does each represent?
qualitative - observations
and quantitative - numbers
A wall being painted a new color is an example of what?
physical change
What type of matter has particles that are close together but can move around each other?
liquid
What two words do we use to structure our hypothesis
if then
What is the first step of the scientific method?
ask a question
What is a product?
The substance that results from the reaction
What state of matter has particles that move around freely causing it to take the shape of the container it is in.
gas
What type of change occurs when you create a new substance?
chemical change
What is the 6th step of the scientific method?
communicate your findings.
What is a dependent variable
the things we measure
True or false - the atoms in a molecule have to be the same
false
What is the 3rd step of the scientific method?
Form a hypothesis
What is the law of conservation of mass
no matter the kind of reaction the the total mass of the reactants always equals the products.
What is a coefficient
a large number before the element symbols noting how many molecules there are
What are the three forms of matter
Solid, Liquid Gas
What is the 4th step of the scientific methos
plan and conduct your research
What is a pure substance?
substance with a constant composition
What is an independent variable and how many can you have in each expierement?
the thing we change - 1