 | Term | Definition |
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The study of the properties of matter |
chemistry |
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A change in matter which does not alter the chemical composition |
physical change |
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when two or more objects combine to make a third more complicated substance |
chemical change |
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color change, completely new object, rust, bubbles, temperature change |
chemical change examples |
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Everything you can: see, taste, feel, and smell |
matter |
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All matter is made of atoms. Atoms are indivisible and indestructible. |
John Daltons Atomic theory |
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Protons- nucleus- positive, Neutrons- nucleus- neutral, Electrons- revolve around the nucleus- negative. |
structure of an atom? |
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a type of matter composed of atoms that all have exactly the same positive charge on their nuclei. |
What is an element? |
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a charged atom or molecule. It is charged because the number of electrons doesn't equal the number of protons. |
ion |
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set up by rows and columns and sets |
periodic table set up? |
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electrons found the furthest away from the nucleus of an atom. |
valence electron |
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Put an equal number of elements on each side. |
balance an equation |
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Tells how much of each element or compound is in a reaction. number in front |
coefficient |
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the materials you have at the beginning of an equation |
reactant |
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the materials you have at the end of an equation |
product |
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a material used to decrease the rate of a reaction. |
inhibitor |
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a material used to speed up the rate of a reaction (lowers activation energy |
Catalyst |
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That matter cannot be created/destroyed |
conservation of mass |
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three things a fire needs to flourish, oxygen, fuel, and a combustion source(heat) |
fire triangle |
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A solid that forms from a solution during a chemical reaction (Chemical change) |
Precipitate |
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sour and range from 1 to 7 on the pH scale . |
Acids |
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bitter and range from 7 - 14 on the pH scale |
Bases |
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Every object in a state of uniform motions tends to remain in that state of motion unless an external force is applied to it. And an object at rest will stay at until acted upon by another force. EX:Car (Inertia) |
1st of newtons laws- |
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Acceleration depends on the object's mass and on the net force acting on it. |
2nd of newtons laws |
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For every action there is an equal or opposite reaction. Hammer hitting a nail, rocket launching. |
3rd of newtons laws |
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A tendency in an object to resist a change in motion. For example, when you are in a car and the car stops but you keep going forward in your seat. |
inertia |
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The law that states gravity is everywhere not just on earth. Even in outer space there is gravity. |
law of universal gravitation |
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Sliding, Rolling, Fluid, Static |
4 types of friction |
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a push or pull on an object |
force |
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The rate at which velocity changes. |
acceleration |
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the change in distance divided by the change in time. in a specific direction |
Velocity |
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property of a body that causes it to have weight in a gravitational field. Has matter and takes up space. |
mass |
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Cells, tissues, organs, and organ systems. |
body is organized. |
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Muscle , Connective, Epithelial, and Nerve |
types of tissue |
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process of involuntary muscles moving food through the digestive system. |
peristalsis |
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A condition in which fatty matirials build up on the walls of arteries, causing them to become narrower or completly blocked |
Arteriosclerosis |
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A condition in which a persons blood pressure is consistently higher then normal |
Hypertension |
