Scientific Methodology
Solve: (3 x 102) + (4 x 102)
(7 x 102)
What is a physical change?
A change in a substance, that doesn't change what the substance is.
What are the three main states of matter found on Earth?
Solids, Liquids, Gases
What two properties does matter have?
mass and volume (takes up space).
What is an independent variable?
The variable that you change during an experiment.
Solve: (2 x 106) - (8 x 105)
(1.2 x 106)
What is a chemical change?
When one or more new substances, are created from the original substances. You change what something is.
What do we call it when a gas changes directly into a solid?
Deposition
What is a homogeneous mixture?
A mixture in which the composition is uniform throughout.
What is a dependent variable?
The variable which changes in response to the change in the independent variable.
Solve: (3 x 107) x (3 x 108)
Cutting, grinding, breaking, crushing, etc are examples of:
Physical changes
What state of matter is the most common throughout the universe?
Plasma
Which type of property depends on the amount of matter in a sample?
Extensive property.
Beavers......duh!
Solve: (4 x 106) / (2 x 104)
The formation of a precipitate, color change, change in energy, are all signs of what?
Chemical change
Rank the three main states of matter found on Earth based on spacing between particles (low to high).
Solid-->Liquid-->Gas
A chocolate chip cookie is an example of:
A heterogeneous mixture.
Please pick out the independent and dependent variable from the following hypothesis:
If I increase the amount of Miracle Grow I give my bamboo plant, the height to which is grows will increase because Miracle Grow is providing it nutrients that are essential for growth.
Independent: Miracle Grow
Dependent: Plant Height
Solve: (3 x 104) / (6 x 102)
(5 x 101)
Deposition is an example of:
Physical change.
Rank the three main states of matter found on Earth based on particle movement (low to high).
Solid-->Liquid-->Gas
Is O2 a molecule or a compound?
Molecule