Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
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
Normal Size Small Size show me how
Unit 2 Test Items
Mr. Holden's unit 2 test
| Term | Definition |
|---|---|
| 5 Branches of Chemisty are? | Organic(carbon containing), Inorganic(non carbon), Physical(interrelationship between energy and matter), Bio(living organisms), Analytical(comopsition oand identification of substances) |
| Phosphate | PO4-3 |
| Sulfate | SO4-2 |
| Carbonate | CO3-2 |
| Nitrate | NO3-1 |
| Hydroxide | OH-1 |
| Chlorate | ClO3-1 |
| Ammonium | NH4+1 |
| Exothermic Reaction energy starts ____ and turns ____ | High, Low |
| Endothermic Reaction energy starts ____ and turns _____ | Low, High |
| Exo/Endo thermic reactions use ____ and make _____ | Reactants, Products |
| Law of conservation of energy states? | Energy cannot be created or destroyed it can only be transfered from one energy to another. |
| Energy can be converted into matter how? | Using the formula E=mc^2 |
| Potential energy is? | Stored energy due to position or composition |
| Kinetic energy is? | Energy of matter in motion. |
| What happens when matter undergoes a change? | Energy must be released or absorbed. |
| Potential energy can be ____ or____. | Gravity, Composition |
| Matter can be ____ or ____. | Pure substance, mixture |
| Pure substances can be ____ or ____. | Elements, Compounds |
| Mixtures can be ____ or_____. | Heterogeneous, Homogeneous |
| Homogeneous mixtures can be either a ____ or ____ | Solute, Solvent |
| A solute is the? | Substance that is being dissolved(typically in smaller quantities but not always) |
| A solvent is the? | Substance that is dissolving the solute(typically in higher quantities but not always) |
| All mixtures can be? | Seperated by physical means. |
| Physical properties can be ____ or ____ and are ____________. | Extensive, Intensive, Observed without altering the identity of the material. |
| Extensive properties depend on? | Depends on the amount of material(Mass, Volume) |
| Intensive properties are? | Independant on the amount of material(Color, Density, Boiling point, Melting point) |
| Chemical properties are? | Properties observed only by changing the chemical identity o the material.(flamibility, heat released by combustion, reactivity with acid, rusting) |
| Physical changes are? | A change in which the chemical identity of the object is retained.(Can be changed back) |
| Chemical changes are? | A change in whih the chemical identity of the material is altered.(Can't be changed back) |
| 4 signs a chemical change has occured are? | Energy has been released or absorbed, production of gas/bubbles, color changes, formation of a precipitate(solid that forms from a solution) |
| An element is a? | Type of matter that cannot be broken down into 2 or more pure substances.(Carbon, Gold, Silver, Tin, Antimony) |
| A compound is a? | Pure substance that contains 2 or more bounded elements. (NaCl) |
| Why is NaCl diferent then Na and Cl? | Because compounds have different properties from those of the elements that they contain. |
| A mixture is a? | A thing that contains 2 or more pure substances.(Air) |
| A heterogeneous mixture is? | Made of a non uniform composition.(Granite) |
| A homogeneous mixture is? | Made of a uniform composition.(Air, Coffee, Bronze, Steel) |
| An Ion is? | A charged atom that's either + or -(most elements + 7 polyatomic ions) |
| Cations are? | Positively charged ions(metals) |
| Anions are? | Negatively charged ions(nonmetals) |
| Ionic bonds are? | An electrical bond between a cation and anions.(Na <--- cation, Cl<--- anion=NaCl) |
| What is an Ionic crystal lattice? | A repeating pattern of oppositely charged ions represented in an ionic compound. |
| Formula unit is? | The lowest whole number of ions used to make an equal charge(NaCl not Na2Cl2) |
| Monotomic ions are? | Ions from single atoms(Cl, Na, Mg basically just elements) |
| A molecule is? | Two or more nonmetal atoms joined in a covalent bond to from an uncharged particle.(H2O, N2C5) |
| Evaporation is an Endo or Exo thermic process? | Endothermic |
| Cooking is a chemical or physical change? | Chemical |
| Freezing gasoline is a chemical or physical change? | Physical |
Created by:
Anand27
Popular Chemistry sets