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8th Science TCAP
Vocabulary that will appear on the 8th grade Science TCAP
| Question | Answer |
|---|---|
| Asexual Reproduction | Reproduction that does not involve the union of sex cells and in which one parent produces offspring that are genetically identical or the parent. |
| Chemical Equation | A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products. |
| Classification | The division of organsims into groups, or classes, based on specific characteristics. |
| Compound | A substance made up of atoms of two or more different elements joined by chemical bonds. |
| Concentration | The amount of a particular substance in a given quantity of a mixture, solution, or ore. |
| Density | The ratio of the mass of a substance to the volume of the substance. |
| Dichotomous Key | An aid that is used to identify organisms and that consists of the answers to a series of questions. |
| Element | A substance that cannot be separated or broken down into simpler substances bu chemical means. |
| Endothermic Reaction | A chemical reaction that requires heat. |
| Extinction | The death of every member or a species. |
| Fossil | The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock. |
| Inertia | The tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object. |
| Law of Conservation of Mass | The law that states that mass cannot be created or destroyed in ordinary chemical and physical changes. |
| Molecule | The smallest unit of a substance that keeps all of the physical and chemical properties of that substance. |
| Nucleus | In physical science, an atom's central region, which is made up of protonsa and neutrons. |
| pH | A value that is used to express the acidity or alkalinity of a system. |
| Product | A substance that forms in chemical reaction. |
| Reactant | A substance or molecule that particpates in a chemical reaction. |
| Relative Age | The approximate age or fossils or other objects in rock layers determined by comparing whether the surrounding rock layers are younger or older. |
| Sexual Reproduction | Reproduction in which the sex cells from two parents unite to produce offspring that share traits from both parents. |
| Species | A group of organisms that are closely related and can mate to produce fertile offspring. |
| Volume | A measure of the size of a body or region in three-dimensional space. |
| Weight | A measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe. |
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kmk3n
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