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
Chemisrty
| Question | Answer |
|---|---|
| Chemistry | The study of the composition of a substance and the changes they undergo. |
| Distinguish between physical and chemical properties of matter. | Physical properties: it can be observed with out changing the substance. Chemical properties: how matter reacts with other matter. |
| copper sulfate is a bright blue substance | physical |
| mercury is a liquid at 20 degrees C | physical |
| Methane (natural gas) is flammable | chemical |
| iron reacts with oxygen gas to form iron oxide | chemical |
| Distinguish between physical and chemical changes in matter | PC: alters a substance without changing composition. CC: alters a substance while changing it |
| water is a puddle evaporates on a sunny day | physical |
| a coffee cup shatters when it falls and hits the floor | physical |
| wood is burned in a camp fire | chemical |
| gasoline burns in a car engine | chemical |
| List 3 common states of matter | solid,liquid, gas |
| Describe location and motion of particles in each | Solid: vibrate in place and tightly packed. Liquid: close together, moving and can't move past each other. Gas: moving fast and far apart. |
| Name the two types of pure substances | element and compund |
| Distinguish between elements and compunds | Elements: made of only one atom. Compounds: made of one or more atoms. |
| element or compound: Water (H20) | compund |
| element or compound: Ozone (O3) | compound |
| element or compound: Helium gas (He) | element |
| Distinguish between pure substance and mixtures | M: consists of a physical blend of two or more substances. PS: can be described by one chemical formula |
| PS or mixture: orange soda | mixture |
| PS or mixture:chocolate chip cookie | mixture |
| PS or mixture: calcium | pure substance |
| PS or mixture: sodium chloride | pure subastance |
| Homo or Hetero mixture: milk | hetero |
| Homo or Hetero mixture: clean air | homo |
| Homo or Hetero mixture: sugar-water | homo |
| Homo or Hetero mixture: muddy water | hetero |
| Distinguish between heterogeneous and homogeneous mixtures | Homo: completely uniform composition Hetero: not uniform compostion |
| Na | sodium |
| K | potassium |
| Br | bromine |
| P | phosphorous |
| He | helium |
| Si | silicon |
| Compare and contrast pure research and applied research | PR: acquiring knowledge for the sake of knowing it. AR: used to solve real world problems. |
| Purpose of the scientific method: | The scientific method is an approach to the solution of scientific problems. |
| Steps of scientific method | 1. Observe. 2. Research. 3. Hypothesis. 4. Experiment. 5. Analyze data. 6. Develop theory. |
| Distinguish between scientific laws and scientific theories | SL: a concise statement that's summerizes the results of a broad spectrum of observations and experiments. ST: a thoroghly tested explanation of why experiments give certain results. |
| CH4(g)+2O2(g)-> CO2(g)+2H2O(g) what are the reactants and products of this equation? | R:CH4(g)and 2O2(g) P: CO2(g) and 2H2O(g) |
| Law of Conservation of Mass: | The atoms you start with are still there at the end. |
| Solution: | A homogeneous mixture |
| Solution, suspention, or colloid: Muddy water | suspension |
| Solution, suspention, or colloid: a cola soft drink | solution |
| Solution, suspention, or colloid: mayonnaise | colloid |
| Solution, suspention, or colloid: italian dressing | suspension |
| Solution, suspention, or colloid: sea water | solution |
| Solution, suspention, or colloid:a medicine accompanied by instructions to "shake before use" | suspension |
| Cl | chlorine |
| F | fluorine |
| Cu | copper |
| Iodine | I |
Created by:
dtimon29
Popular Chemistry sets