All Science Vocabulary
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Created by:
mkate1of4 on September 17, 2012
Subjects:
Description:
All Science Vocabulary as of 9/17/12
Classes:
Smith--8th Grade--Science--2013
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67 terms
Terms | Definitions |
|---|---|
 Data | Any pieces of information acquired through observation or experimentation. |
| density | The ratio of the mass of a substance to the volume of the substance |
| Hypothesis | An explanation that is based on prior scientific research or observation and that can be tested. |
| Inference | an interpretation based on experience and knowledge rather than direct observation |
| interference | the combination of two or more waves that results in a single wave |
| Law | A summary of many experimental results and observations; tells how things work |
| Mean | the average value of the data set |
| Median | the number that falls directly in the middle of a data set when arranged in order from least to most. |
| medium | a physical environment in which phenomena occur |
| meniscus | the curve at a liquid's surface by which one measures the volume of the liquid. |
| Mode | the value that appears the most often in a data set |
| Model | A pattern, plan, representation, or description designed to show the structure or workings of an object, system, or concept |
| Observation | The process of obtaining information by using the senses. |
| Prediction | is an expectation of what is likely to happen in a situation based on observations. |
| Qualitative Data | data that is expressed with out the use of numbers expressed in words |
| Quantitative Data | data that is expressed in numbers and not words |
| Range | the difference between the highest and the lowest values in a data set. |
| Scientific methods | A series of steps followed to solve problems. |
| System | is a set of related or connected parts or ideas that work together as a whole. |
| Theory | An explanation that ties together many hypothesis and observations |
| Atom | The smallest unit of an element that maintains the properties of that element . |
| boiling | the conversion of a liquid to a vapor when the vapor pressure of the liquid equals the atmospheric pressure. |
| 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 |
| condensation | the change of state from a gas to a liquid. |
| Electron | A subatomic particle that has a negative charge. |
| Electron Cloud | A region around the nucleus of an atom where electrons are likely to be found. |
| element | a substance that cannot be separated or broken down into simpler substances by chemical means |
| Heterogeneous mixture | a mixture that contains many parts in random amounts |
| Homogeneous mixture | a mixture that contains many parts in constant amounts. |
| Liquid | the state of matter that has a definite volume but not a definite shape. |
| melting | the change of state in which a solid becomes a liquid by adding energy. |
| mixture | a combination of two or more substances that are not chemically combined. |
| Molecular Motion | The motion of the particles found in matter |
| molecule | the smallest unit of a substance that keeps all of the physical and chemical properties of the substance. |
| Neutron | A subatomic particle that has no charge and that is found in the nucleus of an atom. |
| Nucleus | In physical science, an atom's central region, which is made up of protons and neutrons. |
| Proton | A subatomic particle that has a positive charge and that is found in the nucleus of an atom |
| pure substance | a sample of matter either a single element or a single compound |
| solid | the state of matter in which the volume and shape of a substance are fixed. |
| states of matter | the physical forms of matter, which include solid, liquid, and gas |
| volume | a measure of the size of a body 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 |
| evaporation | the change of a substance from a liquid to a gas. |
| gas | the form of matter that does not have a definite volume or shape. |
| sublimation | the process in which a solid changes directly to a gas. |
| Emission | Something that is given off or released during an experiment |
| precipitate | a solid that is produced as a result of a chemical reaction in a solution |
| absolute zero | the temperature at which molecule energy is at a minimum |
| change of state | the change of a substance from one physical state to another |
| Chemical Bond | an interaction that holds atoms or ions together |
| Chemical Bonding | The combining of atoms to form molecules or ionic compounds |
| Chemical change | a change that occurs when one or more substances change into entirely new substances with different properties. |
| chemical equation | a representation of a chemical reaction that uses symbols to show the relationship between the reactants and products |
| chemical formula | a combination of chemical symbols and numbers to represent a substance |
| chemical Property | a property of matter that describes a substance's ability to participate in chemical reactions. |
| chemical Reaction | the process by which one or more substances change to produce one or more different substances |
| Indicator | and substance that show the presence of another substance (litmus paper) |
| physical change | a change of matter from one form to another without a change in chemical properties. |
| physical property | a characteristic of a substance that does not involve a chemical change, such as density, color, or hardness. |
| product | the substance that forms in a chemical reaction |
| reactant | a substance or molecule that participates in a chemical reaction. |
| reactivity | The ability of an element or substance to combine with another substance |
| solute | in a solution, the substance that dissolves in the solvent |
| solution | a homogeneous mixture of two or more substances uniformly dispersed throughout a single phase |
| solvent | in a solution, the substance in which the solute dissolves |
| Surface Tension | the force that acts on the surface of a liquid and tends to minimize the area of the surface. |
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