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
Ch.3 Science Test
| Question | Answer |
|---|---|
| A pure substance that cannot be separated into simpler substances by physical or chemical means is a what? | element |
| A substance that contains only one type of particle is a what? | pure substance |
| The amount of an element present does not effect the elements what? | characteristic properties |
| Why does a helium balloon float up when it is released? | Because the helium is less dense than air. |
| Which of these are characteristic property of elements? size; melting point; density; shape; mass ; volume; color ; hardness; flammability ; weight; reactivity with acid | melting point; density; color; hardness ; flammability; reactivity with acid |
| What are two common properties that terriers "dogs" share? | small in size and short hair |
| All elements can be classified as metals, metalloids and what? | non-metals |
| An element that is shiny and that conducts heat an electric current well is a what? | metal |
| An element that conducts heat and electric current poorly and can be a solid, liquid or gas is a what? | Non-metal |
| Elements that have properties of both metals and non-metals are what? | metaloids |
| When two or more elements are joined by chemical bonds to form a new pure substance a what is made? | A compound |
| A compound is different from the what that reacted to form it? | elements |
| How is it possible to eat sodium and chlorine? | When the combine it makes a harmless substance that can dissolve in water without exploding. |
| A poisonous greenish yellowish gas is called what? | Chlorine |
| What is table salt? | sodium choloride |
| What is a soft silvery white metal that reacts violently with water? | sodium |
| What compound helps give carbonated beverages their fizz? | carbonic acid |
| The only way to break down a compound is through a ___________ change? | chemical change |
| Aluminum is produced by breaking down what compound? | Aluminum oxide |
| plants use what compound in photosynthesis to make carbohydrates? | carbon dioxide |
| A combination of two or more substances that are not chemically combined is a what? | mixture |
| When two or more materials combine chemically they form a what? | A compound |
| How can you tell pizza is a mixture? | You add two or more things but you aren't chemically combining them. |
| Mixtures are separated through what kinds of change? | physical changes |
| Granite can be pink or black depending on the ______ fledspar, mica and quartz? | ratio |
| The process in which particles of substances separate and spread evenly through a mixtures is known as what? | dissolving |
| In a solution the _______ is the substance that is dissolved? | solute |
| In a solution the ______ is the substance in which it is dissolved? | solvant |
| Salt is __________ in water because it dissolves in water. | soluble |
| When two gases or 2 liquids form a solution the substance that is present in the largest amount is the _________. | the solvant |
| A solid solution of metals or non-metals dissolved in metals are __________? | Alloys |
| What can particles in solution not do because they are so small? | they can never settle out and they cannot be removed by filtering. |
| A measure of the amount of solutes dissolved in a solvent is called ____________. | concentration |
| The ability of a solute to dissolve in a solvent at a certain temperature and pressure is called ________. | soluability |
| Solubility of solids in liquids tends to _____________ with an increase in temperature. | increase |
| Solubility of gases in liquids tends to __________ with an increase in temperature. | decrease |
| What are 3 ways to make sugar cubes dissolve faster in water? | mix, heat , crush |
| Why are particles in a snow globe considered a suspension? | Cause after a while the particles will settle out |
| What do gelatin, milk and stick deodorant have in common? | They are all colloids |
| A mixture of 2 or more uniformly dispersed substances is a ________. | a solution |
| A mixture in which particles of a material are more or less evenly dispersed throughout a liquid or gas is a _____________. | a suspension |
| A mixture of particles that are large enough to scatter light but are not heavy enough to settle out are _____________. | colloids |
| Define concentration as it applies to solutions | concentration is the amount of solute dissolved in a solvant |
| What specific word do we use to describe a solution that has less solute dissolved in it compared to another solution? | dilute |
| What specific word do we use to describe a solution that has more solute dissolved in t compared to another solution? | concentrated |
| Is water always the solvent in a solution? | no |
Created by:
basketball02