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Description
Flashcards by Abdirahman mohamed, updated more than 1 year ago
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Created by Abdirahman mohamed
about 8 years ago
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| Question | Answer |
| What is Density? |
A measure of the mass per unit volume of a substance.
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| What does density measure? |
Density measures grams and centimeter cubed.
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| Which is more denser stones or feathers? | Stones are because if you drop it, the stone will fall straight down and the feather will float. |
| Which is more denser between liquids and solids of the same substance? |
Solids because when they are placed in liquids they usually sink.
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| What happens to the density of solids and liquids when they are heated? | When they are heated the particles in a solid and liquid move a little further apart, causing the substance to expand slightly. |
| What does density depend on? | Density depends on the amount of substance and the space it takes up and so its units includes the units of mass and volume. |
| What happens to a gas when they are heated? |
When a gas is heated the particles spread further apart, lowering its density even more.
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| When does smoke rise? |
Smoke rises when hot air is less than cold air and will rise above it
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| Why does a hot air balloon rise? |
The over-all density of a hot air balloon is less than the density of the air balloon is less than the density of the air.
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| What is density measured in? | Density is measured in grams and per centimeter cubed. |
| What is mass? |
Mass measures how much matter in a substance.
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| What units are used to measure mass? |
They are grams, kilograms and tones
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| What does density depend on? | It depends on volume. |
| What is volume? |
Volume measures how much space is occupied by a substance.
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| What is the formula for density? |
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| What is volume measured in? | It is ML and L |
| Which items will float and sink and give examples? |
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| How does water act above 4 degrees Celsius? | It expands when cools and contact when heated. |
| What term best describes( how much matter is in a object)? | Mass |
| What term best describes( the quantity measured in mL)? | Volume |
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