Scientific Inquiry
What is an independent variable?
The variable the scientist purposely manipulates or changes in an experiment
What is matter?
What is a compound?
A substance made up of two or more elements that are chemically combined in a set ratio.
What is a force?
A push or pull
What is energy?
The ability to do work or cause change
What is a dependent variable?
The variable the scientist measures
What is chemistry?
The study of matter and how it changes
What is a mixture?
two or more substances held together in the same place but NOT chemically combined.
How do you calculate net force?
Forces in same direction you add.
Forces in opposite directions you subtract.
What are the two types of energy?
Potential and Kinetic
What is a control variable?
The variable the scientist keeps the same/constant.
What is an element? Where are elements found?Provide one example of an element?
is a substance that cannot be broken down into any other substances by chemical or physical means.
Periodic Table
Sodium, Aluminum, Magnesium etc.
Homogeneous vs. Heterogeneous Mixture
Homogeneous: evenly mixed
Heterogeneous: Not evenly mixed
What is friction?
The force that two surfaces exert on each other when they rub against each other.
hydroelectric, solar, geothermal, wind
coal, nuclear, oil, natural gas.
What is the difference between a qualitative and quantitative observation
Qualitative= uses 5 senses
Quantitative= uses numbers or measurements
What is an atom?
Is the basic particle from which all elements are made
What are the states of matter? What are particles doing on each state of matter?
Solid, Liquid, and Gas (plasma)
Sliding, Fluid, Rolling, and Static
What is the definition of a wave?
A disturbance that transfers energy from place to place.
A scientist is conducting an experiment to see how the amount of water affects the height that a plant grows. In the experiment, the scientist is using placing the plants outside, with the same amount of soil, and using the same amount of water.
What is the independent, dependent, and control variable.
independent: amount of water
dependent: height of plant
control: amount of water, sunlight, and soil
What is a molecule?
Is a group of 2 or more atoms held together by a chemical bond.
What is the structure of the atoms? What are the charges of the particles inside the atom? What is the valence electron?
Protons (+), Neutrons(0), Electrons (-)
Valence E-electron in the outer most shell
Name Newton's 1st law of motion
Law 1: an object at rest will remain at rest unless acted upon by a nonzero net force
What is magnetism?
An attraction or repulsion of magnetic material