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Chapter 1
Chemistry - Holt
| Side 1 | Side 2 |
|---|---|
| Chemical Reaction | the process by which one or more substances change to produce one or more different substances |
| Reactant | a substance or molecule that participates in a chemical reaction |
| Product | a substance that froms in a chemical reaction |
| Matter | Anything that has mass and takes up space |
| Volume | a measure of the size of a body or region in three-dimensional space |
| Mass | a measure of the amount of matter in an object; a fundamental property of an object that is not affected by the forces that act on the object, such as the gravitational force. |
| Weight | a measure of the gravitational force exerted on an object; its value can cahnge with the location of the object in the universe. |
| Quantity | something that hs magnitude, size, or amount |
| Unit | a quantity adopted as a standard of measurement |
| Conversion factor | a ration that is derived from the equality of two different units and that can be used to convert from one unit to the other |
| Physical property | a characteristic of a substance that does not involve a chemical cahnge, such as density, color or hardness. |
| Density | the ration of the mass of a substance to the volume of the substance; often expressed as grams per cubic centimeter for solids and liquids and as grams per liter for gases. |
| Chemical Property | A property of matter that describes a substance's ability to participate in chemical reactions |
| Atom | the smallest unit of an element that maintains the properties of that element |
| Pure substance | a sample of amtter, either a single element or a single compound, that has definite chemical and physical properties. |
| Element | A substance that cannot be separated or broken down into simpler substance by chemical means; all atoms of an elemetn have the same atomic number |
| Molecule | The smallest unit of a substance that keeps all of the physical and chemical properties of that substance; it can consist of one atom or two or more atoms bonded together. |
| Compound | a substance made up of atoms of two or more different elements joined by chemical bonds |
| Mixture | a combination of two or more substances taht are not chemically combined |
| Homogeneous | describes somethign that has a uniform structure or composition throughout |
| heterogeneous | composed of dissimilar components |
| What is Chemistry? | Chemistry is the study of chemicals, their properties, and the reactions in which they are involved. |
| What are the 3 states of matter? | Solid, liquid, and gas. |
| Mater has both --- and ---; matther thus has density, which is the rration of --- to ---. | mass and volume |
| SI units are used in science to express ---. | quantities. |
| ---- factors are used to change a given quantity from one unit to another unti | conversion |
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etalentino
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