Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


Matter a substance that has a mass and takes up space
Mass measured in kg
Weight the force that pulls mass to Earth; measured in N (newton)
Volume the space that matter takes up; measured in m^3 (meters cubed) or in chemistry still commonly L (liter) 1L = 0.001m^3
3 physical states (phases) of matter solid, liquid, gas
Physical properties used to identify the phases of matter; color, density, melting point, boiling point, and solubility (in H20)
Conservation of Matter
Solid Highest organized molecules/atoms; fixed in crystal structure; least compressible state of matter; molecules/atoms have the least amount of potential energy
Heating curve Shows the change of temperature over time or input of energy
Density Describes how compact the atoms are within elements
Homogenous matter Consistent properties throughout; can be all the same element; can be a compound
Compound Two or more elements combined in fixed proportion; has its own set of properties; can only be separated by chemical means
Homogenous mixtures Components cannot easily (visually) be separated; components do NOT form chemical bonds
Heterogenous mixtures Components can be easily separated
Mixtures Properties are dependent on the ratio of the components and a mix of the component's properties; alloy is a mixture of metal (Ex. Brass or Steel)
Separating mixtures by physical means include: Sorting under a microscope, heat through distillation, magnet, centrifuge, chromatography, evaporation
Separating mixtures by chemical means includes: Adding a substance that forms a compound with only part of the unit
Energy Capability/ability to do work; 2 main types include potential and kinetic energy
Potential energy Based on position in relation to zero-position
Kinetic energy Energy of motion
Chemical energy Energy stored in chemical bonds
Law of conservation of energy Energy cannot be created or destroyed; it is just transformed into another type of energy
Now often called the conservation of mass, is a law of nature that states that matter/mass can neither be created or destroyed; only altered
Jules n SI unit
Calories/kilocalories (cal/kcal) The energy required to heat 1g of water 1 degree Celsius
Temperature A measurement of the average kinetic energy of all molecules in a system
Fahrenheit German chemist, Daniel Fahrenheit; 32 degrees is based on an ice + salt mix; 98.6 degrees is the body temperature; 212 degrees is the boiling point of water
Celsius Based on freezing of water = 0 degrees Celsius; boiling point of water = 100 degrees Celsius
Kelvin Directly related to the kinetic energy in a system; 0K (absolute 0) = no molecular movement exists
Definite volume; ability to flow; fills its container (no definite shape); virtually incompressible; vapor equilibrium (constant evaporation and condensation)
Calorimeter Device used to record heating curves; insulated, closed container equipped with thermometer and stirrer
Endothermic Takes energy from outside
Exothermic Releases energy
Torr The unit used for vapor pressure
Standard pressure 760 torr
Solid —> liquid Melting/liquefaction/fusion
Liquid —> solid Crystallization/solidification
Properties of gas No definite shape or volume, is a fluid (ability to flow), easily compressible, less dense than a solid and liquid of the same volume, very small intermolecular attraction, molecules are in constant random motion, collisions between molecules are elastic
Concentration Amount of molecules per unit volume
Phase diagram Shows in which physical state of matter a substance will be at a certain Temperature-pressure combination
Triple point The temperature-pressure point at which a substance exists in all 3 phases
Critical point Temperature-pressure point above which the liquid and gas phase are indistinguishable (This phase is called: supercritical fluid)
Created by: UltimateAbdul