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Science Language Students Should Know And Use
Physical Change - A change in the structure of a substance. After the change, it keeps all of its properties.
Chemical Change - The process converting one substance into another substance that will have new properties.
Dissolve - The process of a solid substance breaking down while in a liquid substance.
Heat - An energy form which can be transfered between objects.
Liquid - The state of matter in which particles slide freely over one another. The water in the river is in a liquid state.
Matter - Something that has mass and takes up space.
Product - The substance that comes out of a chemical change.
Reactants - The substances that are used to make a chemical change.
Solid - The state of matter in which particles vibrate and do not appear to move. Ice is water in a solid state.
Substance - Any material that can be observed.
Weight - A measurement of how much Earth's gravity pulls on an object.
Important facts
Solid Liquid Gas
Physical Change - A change in the structure of a substance. After the change, it keeps all of its properties.
Chemical Change - The process converting one substance into another substance that will have new properties.
Dissolve - The process of a solid substance breaking down while in a liquid substance.
Heat - An energy form which can be transfered between objects.
Liquid - The state of matter in which particles slide freely over one another. The water in the river is in a liquid state.
Matter - Something that has mass and takes up space.
Product - The substance that comes out of a chemical change.
Reactants - The substances that are used to make a chemical change.
Solid - The state of matter in which particles vibrate and do not appear to move. Ice is water in a solid state.
Substance - Any material that can be observed.
Weight - A measurement of how much Earth's gravity pulls on an object.
Important facts
- "The Law of Conservation of Matter". This law says that matter cannot be created or destroyed by ordinary means.
- Changes in physical properties are called physical changes. If the size, shape, or state of a substance changes but the substance itself remains the same, then we say a physical change has occurred.
- One way to describe the physical properties of a substance is to identify its form, or state. The three states (or forms) of matter are:
Solid Liquid Gas
chemical changes the following things can happen:
A chemical change is a change where the chemicals in two or more different substances combine or change into a different kind of matter. One or more of these things must happen:
A chemical change is a change where the chemicals in two or more different substances combine or change into a different kind of matter. One or more of these things must happen:
- Color change
- Heat is given off
- Heat is used
- New material is formed
- Sometimes in chemical reaction a gas is also given off.