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Description
Flashcards by Seth Bailey, updated more than 1 year ago
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Created by Seth Bailey
about 7 years ago
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| Question | Answer |
| What is a particle? | very small part of a material such as an atom or molecule |
| What is a particle model? | a way of explaining the behaviour of solids, liquids and gasses in terms of small moving particles |
| What is energy | If something has energy if it can make something happen with the energy |
| What are Intermolecular forces | transfered forces |
| What is density | how close together the molecules of a substance are |
| Name the 3 states of the particles | |
| Can you press against Solids Liquids Gases | Solids - No Liquids - Yes Gases - Yes |
| Can you push against Solids Liquids Gases | Solids - No Liquids - Yes Gases - Yes You can easily push your hand through liquids and gases |
| Can the following change shape? Solids Liquids Gases | Solids (ice can't) - No Liquids (water can) - slightly Gases (smoke can) - Yes |
| Can the following squash? Solids - No Liquids - Yes Gases - Yes | sand can't water can air can |
| Give examples of three gases | Oxygen, helium, carbondioxide |
| Are gases fast or slow? | Fast |
| Are solids hard or soft? Some solids can dissolve in water, give an example. | hard sugar |
| Are metals strong or weak? | strong |
| Name something metal can do that non metals can't | conduct heat and electricity |
| What does brittle mean? | it can snap |
| Which of these substances will disolve? copper, iron, salt | salt |
| Which of these substances can conduct electricity spring nail plastic glass wood | spring nail |
| What does malleable mean? | bendable |
| What are independent variables? | variables you can change |
| What are dependent variables | variables you can measure |
| What are controlled variables | variables that you keep the same |
| Give 3 examples of properties of Liquid | Spread out drinkable try to fill space you can boil it |
| Give 2 examples of gases | spread out in tight spaces you can inhale them |
| Give an example of an independent variable | The length of someones hair |
| What is diffusion? | movement of particles from a high concentration to a low concentration e.g. squash diluted in water |
| Which image shows the less concentrated solution? | >The one on the right because the particles are more evenly dispersed. |
| What is a melting point? | The fixed temperature at which a pure solid substance melts e.g.. ice |
| What is Freezing point? | The fixed temperature at which a pure liquid substance freezes. e.g.. water |
| What is a pure substance? Give an example of a pure substance. | a substance that contains only one type of particle. gold |
| What is a mixed substance? | A substance that contains two or more substances which are mixed. |
| How do we separate two different sized solids | we use a sieve e.g.. sand from gravel |
| How would we separate a magnetic and non magnetic mixture? give an example of substances | we would use a magnet iron filings from sand |
| How would you separate a mixture of salty water and sand? | we would use a filter funnel and filter paper. The sand is insoluble whilst the salt is soluble |
| How would you separate salt from water? | heat up the water which will evaporate leaving the salt behind. |
| what apparatus do you use to separate two immiscible liquids? | a separating funnel |
| What is it called when a solid is mixed with a liquid so it can no longer be seen? | dissolve |
| What is a solvent | a liquid in which something can be dissolved? |
| What is a solute? | a solid that has been dissolved |
| What is a solution? | a mixture that a solid has dissolved into. |
| What is a soluble | a solid that can dissolve |
| What is the mass of solute that dissolves in a solute at a particular temperature | Solubility |
| The increasing temperature will increase the solubility of a liquid true or false? | true |
| Diffusion depends on what? | temperature |
| Temperature affects the viscosity of liquids. What does viscosity mean | sticky the property of a liquid that describes how fast or slow it will flow |
| What two ways does temperature affects the viscosity of liquids | particles get energy spreads out and flows easier |
| What is the change of state when steam hits a window? | condensation |
| What appears when hot steam hits a cold window? | condensation |
| An insoluble liquid means what? | A liquid that can't dissolve |
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