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skim
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What are the structures on the skin's surface that help remove liquid wastes?
cilia
True or False The less surface area the faster a substance will change from a solid to a liquid?
When a substance goes from a solid to a liquid, it is melting. Generally, it is easier to heat an object that has more surface area because it has more area being exposed to heat.
Will a substance dissolve faster if it is ground into powder first?
The dissolution rate of a substance is affected by the surface area that can react with the liquid it is dissolving in. Powdering it increases the surface area so it increases the dissolving rate.
How is evaporation different from boiling water?
You boil a substance to evaporate the liquid.
How does filteration relate to water?
A liquid mixture of water and a solid substance can be filtered to remove the other substance. Water will pass through the filer while the other substance will not. For instance, a water and sand mixture can be filtered to remove the sand.
What are surfactants?
A substance that tends to reduce the surface tension of a liquid in which it is dissolved.
What is a substance that flows on and below the surface of a liquid?
plasma
What is the only substance existing as solid liquid or gas at earths surface?
Water
What surface doesn't cause a lot of friction?
A very smooth surface or a smooth surface coated with a liquid, oil or a Teflon like substance.
What are the structures on the skin's surface that help remove liquid wastes?
cilia
True or False The less surface area the faster a substance will change from a solid to a liquid?
When a substance goes from a solid to a liquid, it is melting. Generally, it is easier to heat an object that has more surface area because it has more area being exposed to heat.
How are evaportion and boiling different?
Evaporation occurs at the surface of a liquid at any temperature as long as the substance is a liquid. Boiling occurs throughout the liquid and occurs at the boiling point.
The only substance near the earth's surface that is found naturally in the atmosphere as a solid a liquid and a gas?
Water
Will a substance dissolve faster if it is ground into powder first?
The dissolution rate of a substance is affected by the surface area that can react with the liquid it is dissolving in. Powdering it increases the surface area so it increases the dissolving rate.
How is evaporation different from boiling water?
You boil a substance to evaporate the liquid.
When vaporization takes place on the surface of a liquid is called?
If vaporization takes place at the surface of a liquid, it is called evaporation. but when evaporation occurs throughout the substance it is called boiling.
How does filteration relate to water?
A liquid mixture of water and a solid substance can be filtered to remove the other substance. Water will pass through the filer while the other substance will not. For instance, a water and sand mixture can be filtered to remove the sand.
