Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.

Remove ads
Don't know
Know
remaining cards
Save
0:01
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:
Retries:
restart all cards




share
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

Chemistry

Matter/Atoms

QuestionAnswer
Atom - the smallest unit of an element that maintains the chemical properties of that element; basic building block of matter
Boiling Point - temperature at which a liquid changes to a gas at a given pressure
Conservation- to have change in a chemical reaction but no net gain or loss of molecules
Chromatography- a method of separating a mixture made of color into the primary colors which made it
Decomposition- a type of reaction in which the complex reactant breaks down into simpler products
Ductility - the ability to be formed or pulled into a wire or tube
Electron- the tiny negatively charged particle found in the cloud of the atom
Element - a substance that cannot be separated or broken down into simpler substances by chemical means; all the same of type atoms
Endothermic - during a chemical reaction energy is absorbed by the molecules of the products.
Exothermic – during a chemical reaction energy is released
Heat - the energy transferred between objects that are at different temperatures
Ion- an atom or group of atoms that has a positive or negative electric charge from losing or gaining one or more electrons; occurs during bonding
Indicator- an organic compound used to indicate the presence of a chemical. It changes color to indicate the presence of____ Ex. Hydrion paper tells if acid or base, iodine if a starch is present, phenol red if CO2 is present.
Mass - amount of matter contained in a substance
Matter - anything that has mass and volume
Melting Point - the temperature and pressure at which a solid becomes a liquid
Malleability - able to be bended, shaped, or flattened or hammered flat
Motion - an object's change in position relative to a reference point
Neutron- the neutral particle of an atom-found in the nucleus.
Particles - a very small piece or part; a tiny portion or speck.
Phase - one of the four states or conditions in which a substance can exist: solid, liquid, gas, or plasma.
Proton- the positive particle of an atom found in the nucleus. Makes the element unique.
Pure Substance - a sample of matter, either a single element or a single compound, that has definite chemical and physical properties
Saturation - a solution that cannot dissolve any more solute under the given conditions
Solubility - the solubility to dissolve in another substance
Solute - in a solution, the substance that dissolves in the solvent
Solvent - in a solution, the substance in which the solute dissolves
Solution- a homogenous mixture in which a solute dissolves in a solvent
Synthesis- a chemical reaction in which simple reactants combine to form a more complex product(compound)
Volume - amount of space an object occupies
Mass - a measure of the amount of matter in an object
Crystal Pattern - a solid in which all the atoms are arranged in a regular, repeating pattern.
Evaporation - process in which liquid water changes to water vapor with the addition of energy.
Filtering - a porous material through which a substance is passed in order to separate the fluid from suspended particulate matter.
Heterogeneous - a mixture that is not mixed evenly and each component retains its own properties
Sifting - to separate and retain the coarse parts to remove lumps and large particles
Conductivity - property of metal and alloys that allow heat or electricity charges to pass through the material easily.
Metals - an element below and to the left of the stair-step line of metalloids; about 80% of the known elements are metals; metals are shiny, good conductors, low specific heat, high melting points, malleable, and ductile.
Model - a standard or example used for comparison.
Periodic Table - an arrangement of elements in order of increasing atomic numbers that demonstrates the periodic patterns that occur among the elements.
Physical Properties - a characteristic of a substance that can be observed without changing the identity of the substance
Reactivity - the ability of an atom or molecule to undergo a chemical reaction with another atom, molecule or compound.
Chemical bond - the "glue" that attracts and keeps atoms held together due to sharing of each atom's electrons
Chemical change - the process in which one or more substances are changed into one or more new substances
Chemical property - property that can be observed only when a substance is changed into a new substance
Precipitate - the solid that is formed as a result of a precipitation reaction
Closed System - the reactants and products in the reaction that are contained to reduce error
Law of Conservation of Mass - states that the total amount of mass and energy in the universe is conserved (does not change)
Products - materials present at the end of a reaction
Reactants - the starting materials in a reaction
Homogenous - solid, liquid or gas that contains two or more substances blended evenly throughout.
Mixtures - the physical combination of 2 or more substances; can be separated by physical means.
Molecule - consisting of one or more atoms held together by chemical forces; formed by bonding
Compound - a substance made of two or more different atoms
Density - the measure of mass of a substance per unit volume
Created by: Saba Aleem