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Science EOG vocab
All of the vocabulary we have done in 8th Grade Science.
| Question | Answer |
|---|---|
| Molecule | The smallest particle in a chemical element or compound that has the chemical properties of that element. |
| Element | The simplest form of a pure substance. |
| Compound | Pure substances that are the unions of two or more element. Can be chemically broken down. |
| Mixture | Two or more substances that can be physically separated. |
| Homogenous mixture | Same throughout. |
| Heterogenous mixture | Not same throughout. |
| Proton | Positive charge, equal to electrons/atomic number. |
| Neutron | Netural charge. |
| Electron | Negative charge, equal to protons/atomic number. |
| Solution | A homogenous, molecular mixture of two or more substances. |
| Ductile | Metal capable of being drawn out in strands . |
| Valance electrons | The outer shell of an atom. |
| Precipitate | Solid made from a liquid during a chemical reaction. |
| Catalyst | Something that speeds up a chemical reaction. |
| Exothermic | Releases heat energy. |
| Endothermic | Absorbs heat energy. |
| Biomass | Material from living things used as an energy source. |
| Photovoltaic | Uses electricity to make solar energy. |
| Sedimentary rock | Formed through the deposition and solidification of material. |
| Metamorphic rock | Made from high heat and high pressure. |
| Igneous rock | Made from cooling and solidification of magma or lava. |
| Petrified fossils | Fossil made of minerals. |
| Carbon fossils | The remains of organisms converted into a carbon residue. |
| Isotope | Atoms of the same element with the same amount of protons but different neutrons. |
| Radiometric dating | Using the rate of decay of unstable isotopes to find absolute age of rocks or fossils. |
| Half-life | How long it takes for the radioactivity of a certain isotope to fall to half its original value. |
| Carbon-14 | Basis for radiocarbon dating. |
| Index fossil | Fossils used to define the geologic time scale |
| Homologous structure | Body parts of different organisms with the same structure but not the same function |
| Analogues structure | Body parts of different organisms with same functions but not the same structure. |
| Vestigial structure | Body parts that are unnecessary in an organism. |
| Taxonomy | Branch of science responsible for naming/catagorizing different species |
| Niche | An organisms job in an ecosystem. |
| Phenotype | Physical makeup of an organism |
| Nitrification | Nitrogen->nitrates |
| Ammonification | Dead animals nitrogen turned into ammonia (next is nitrification). |
| Permability | Able to pass through |
| Brackish water | Saltwater and freshwater mix. |
| Necton | Animals able to move wo/ water currents |
| Benthos | The flora and Fauna found at the bottom of a water source |
| Upwelling | Cold water from the bottom comes up to the top |
| Carbonic acid | H2Co3 |
Created by:
stephseogprep
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