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Matter
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Question | Answer |
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Matter | Matter: Anything that has mass and takes up space. |
Chemistry | Chemistry: The study of matter and how matter changes. |
Substance | Substance: A single kind of matter that is pure, meaning it always has a specific make-up, or composition. |
Physical Property | Physical property: A characteristic of a substance that can be observed without changing it into another substance. |
Chemical Property | Chemical Property: A characteristic of a substance that describes its ability to change into different substances. |
Atom | Atom: the basic particle that all elements are made. |
Molecules | Molecules: A group of two or more atoms held together by a chemical bond |
Chemical Bond | Chemical bond: When atoms combine from more than one element’s. |
Compound | Compound: A substance made of 2 or more elements that are combined in a set ratio (Chemical formula: H20) |
Chemical Formula | Chemical Formula: Shows the elements that make the compound and the ratio or amount of atoms of each element. |
Mixture | Mixture: made of 2 or more substances that are together in the same place, but their atoms have not chemically bonded. |
Heterogeneous Mixture | Heterogeneous mixture: When a mixture is not the same throughout |
Homogenous Mixture | Homogenous mixture: When the mixture is the same throughout. |
Weight | Weight: The measure of the force of gravity on you. |
Mass | Mass: The amount of matter in the object. |
SI | SI: International unit of measure that scientists use. |
Volume | Volume: The amount of space that matter occupies. |
Density | Density: How tightly packed the matter is in an object, compares the objects mass to its volume. Density formula D: M/V |
Physical Change | Physical Change: It alters the form or appearance of matter but does not turn any substance in the matter into a different substance. If a substance undergoes a physical change is still the same substance after the change. |
Chemical Change | Chemical Change: A change in matter that produces one or more new substances, also called a chemical reaction. |
Law of Conservation of Mass | Law of Conservation of Mass: Matter is not created or destroyed in any physical or chemical change only changed into something different. |
Thermal Energy | Thermal Energy: The total energy of the motion of all of the particles (atoms/molecules) in an object. (Heat Energy) |
Endothermic Change | Endothermic Change: A change in which energy is absorbed. |
Exothermic Change | Exothermic Change: A change in which energy is released. |
Chemical Energy | Chemical Energy: The energy stored in the chemical bonds between atoms is a form of energy. |