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Mix & Flow of Matter

TermDefinition
Agitation stirring or shaking (19)
Archimedes’ Principle a scientific principle stating that the buoyant force acting on a submerged object equals the weight (force of gravity) of the fluid displaced by the object (65)
Area the amount of surface; measured in square units such as cm2 (304)
Average Density the total mass of an object divided by the total volume (62)
Bar Graph a diagram consisting of horizontal or vertical bars that represent (often numerical) data
Barometer the most common device for measuring air pressure (76)
Buoyancy the tendency to rise or float in a fluid (59)
Buoyant Force the upward force exerted on objects submerged in or floating on a fluid (59)
Capacity the largest amount that can be held by a container (usually measured in litres or millilitres)
Capacity Unit unit used to measure the volume of liquids, e.g., the litre (L)
Change of State the transformation of a substance’s physical state (whether solid, liquid, or gas) into another state
Circle Graph a circle divided into sections (like pieces of a pie) to represent data; also called a pie chart
Classify to group ideas, information, or objects based on their similarities
Colloid a heterogeneous mixture in which particles do not settle (15)
Compressibility the ability to be squeezed into a smaller volume; a property of gases
Compressible capable of being squeezed into a smaller volume
Compressor an electrical device that compresses air (82)
Conclusion an explanation of the results of an experiment as it applies to the hypothesis being tested
Condensation the process of changing from gas to liquid
Control in a scientific experiment, a standard to which the results are compared; often necessary in order to draw a valid conclusion; ensures a fair test
Co-ordinate Graph a grid that has data points named as ordered pairs of numbers, (e.g., (4, 3))
Cubic Units the units used to report the volume of a substance (e.g., cm3)
Decompress to release from pressure
Dehydration the process of removing water from the solution
Density the amount of mass in a certain unit volume of a substance (density equals mass divided by volume) (50)
Desalination removal of dissolved salts from a solution
Desalination Plant the buildings and machinery used in producing fresh water by removing salts from seawater
Displace to move something out of the way (e.g., a solid object can displace water out of a container)
Dissolved Solids salts, such as sodium, calcium, and magnesium found dissolved in water (449)
Dissolving breaking up; forming a solution by mixing two or more materials together (17)
Distillation a method of separating the parts of a liquid mixture
Emulsion a mixture in which droplets of fat are prevented from joining together by an emulsifying agent (15)
Evaporation vaporization that occurs slowly over a wide range of temperatures
Experiment an activity or procedure designed to test a hypothesis
Exponent in science or mathematics, a number, or power, that tells you how many times the number is multiplied by itself; e.g. 103 means 10 × 10 × 10 or 1000
Fair Test an investigation (experiment) carried out under strictly controlled conditions to ensure accuracy and reliability of results. In a fair test, all variables are controlled except the one variable under investigation.
Feedback the return of information from the output of a system to the input
Filtrate the solution which passes through a filter paper or through a filtration device
Floating remaining suspended in a fluid; for example, not falling in air or sinking in water (59)
Flow pressure pressure that is caused by a moving fluid
Flow Rate the volume of fluid that passes a point in a pipe or tube in a certain amount of time (40)
Fluid any substance that flows; includes liquids and gases (2)
Fluidity the ability to flow (2)
Force a push or a pull, or anything that causes a change in the motion of an object (53, 304)
Fractional Distillation a process that yields different petroleum products by separating parts of a solution
Freezing the process of changing from liquid to solid
Freezing Point the temperature at which a liquid freezes
Gas the state of matter in which a substance has neither a definite shape nor a definite volume (e.g., water vapour) (7)
Graphic Organizer a visual learning tool that helps clarify the relationship between a central concept and related ideas or terms
Gravity the attractive force between masses; causes objects to be attracted to Earth (53)
Heterogeneous made up of parts, or mixed (15)
Histogram a type of bar graph in which each bar represents a range of values and in which the data are continuous
Homogeneous the same in structure, quality, or kind (14)
Hydrometer an instrument designed to measure the density of a liquid (67)
Hypothesis a testable proposal used to explain an observation or to predict the outcome of an experiment; often expressed in the form of an “If …, then …” statement.
Impermeable allowing no materials to pass through (128, 403)
Incompressible incapable of being squeezed into a smaller volume (73)
Infer to conclude or decide by reasoning
Inference a conclusion or opinion formed by inferring
Insoluble not able to be dissolved in a particular solvent (24)
Joule (J) a unit used to measure energy or work; 1 J
Kilopascal (Kpa) a unit of pressure equal to 1000 pascals (71)
Line Graph a diagram that shows how one value depends on or changes according to another value; produced by drawing a line that connects data points plotted in relation to a y-axis (vertical axis) and an x-axis (horizontal axis)
Liquid the state of matter in which a substance has a definite volume, but no definite shape (e.g., water) (7)
Manipulated Variable in an experiment, a factor that is selected or adjusted to see what effect the change will have on the responding variable
Mass the amount of matter in a substance; often measured with a balance (53)
Mechanical Mixture mixtures that are obviously heterogeneous (15)
Melting the process of changing from solid to liquid
Melting Point the temperature at which a solid changes to a liquid
Mixture a combination of two or more pure substances such as that each one’s properties are not lost, but may be hidden (13)
Neutral Buoyancy the condition in which the amount of force pulling down on an object immersed in a fluid (i.e., gravity) equals the amount of force pushing up (buoyancy) (65)
Particle Model of Matter a scientific model of the structure of matter; one part of this theory states that all matter is made up of extremely small particles
Pascal (Pa) a unit for pressure; newtons per square metre (N/m2) (71)
Pascal’s Law a law stating that when pressure is exerted on one part of a fluid, the same pressure is transmitted unchanged to all parts of the fluid, no matter what the shape of the container holding the fluid (307)
Phases separate parts of a mechanical mixture (15)
Pneumatic System a system in which a gas, such as air, transmits a force exerted on the gas in an enclosed space (82, 313)
Pneumatics the study of pressure in gases
Properties characteristics that describe matter (13)
Pure Substance a material that contains only one kind of particle
Rate of Dissolving how fast a solute dissolves in a solvent
Saturated Solution a solution in which no more solute will dissolve in a specific amount of solvent at a specific temperature (20)
Solid the state of matter in which a substance has a definite shape and a definite volume (e.g., ice) (7)
Soluble able to be dissolved in a particular solvent (18)
Solubility the mass of a solute that can dissolve in a given amount of solvent to form a saturated solution at a given temperature (200)
Solute a substance that dissolves in a solvent (e.g., salt is a solute that dissolves in water) (18)
Solution a homogeneous mixture of two or more pure substances (14)
Solvent a substance that dissolves a solute to form a solution (e.g., water is a solvent that dissolves salt) (18)
Sublimation the process of changing from solid to gas without going through the liquid state
Supersaturated Solution a solution that contains more solute than would normally dissolve at a certain temperature (21)
Suspension a heterogeneous mixture in which particles settle slowly after mixing (15)
Table an orderly arrangement of facts or numerical data set out for easy reference; for example, an arrangement of numerical values in vertical or horizontal columns
Temperature a measure of the thermal energy of the particles in a substance
Theory an explanation of an event that has been supported by consistent, repeated experimental results and has therefore been accepted by a majority of scientists
Unsaturated Solution a solution in which more of the solute could
Dissolve in a specific amount of solvent at the same temperature (20)
Vaporization the process of changing from liquid to gas
Variable a factor that can influence the outcome of an experiment
Viscosity the measure of how fast a fluid will flow; the “thickness” or “thinness” of a fluid (40)
Volume the measurement of the amount of space occupied by a substance; measured in litres or cubic units such as cubic centimetres (cm3) (53)
Weight the force of gravity exerted on a mass (53)
Whmis an acronym that stands for Workplace Hazardous Materials Information System
Work the transfer of energy through motion
Created by: sjchampion