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Phase changes Properties Changes Labs Vocab 10 Point 10 Point 10 Point 10 Point 10 Point 20 Points 20 Points 20 Points 20 Points 20 Points 30 Points 30 Points 30 Points 30 Points 30 Points 40 Points 40 Points 40 Points 40 Points 40 Points 50 Points 50 Points 50 Points 50 Points 50 Points
The name for the phase change that occurs when a liquid changes into a solid.
What is freezing
The phase change that explains why water collects on the outside of a cold glass
What is condensation
Phase change that explains why your skin feels salty at the beach after you are dry.
What is evaporation?
It has a definite shape and volume.
What is a solid?
When dry ice (solid CO2) turns into a gas.
What is sublimation?
T/F: Physical properties can be observed without changing the chemical nature of a substance.
What is true?
T/F: When chemical properties are tested the original substance is unchanged.
What is false?
An example of a physical property.
What is color, hardness, density, mass, volume, boiling point, or melting point?
An example of a chemical property.
What is flammability, explosive, ability to rust, decompose, react with an acid?
Type of properties used to separate mixtures.
What are physical properties?
No new substances are created.
What is a physical change?
The original properties are not retained.
What is a chemical change?
An example of a physical change.
What is breaking, cutting, scraping, freezing, melting, boiling, etc?
An example of a chemical change.
What is burning, rusting, decomposing, exploding, combusting, etc?
A possible indicator that a chemical reaction has occurred.
What is color change, gas production (bubbles), energy transfer, precipitate
Separates iron filings from a mixture.
What is a magnet?
Separates solids from liquids.
What is filtration?
The only means by which a compound can be separted.
What are chemical reactions?
Device used to determine mass.
What is a balance?
Method used to separate a mixture of two liquids.
What is distillation?
A mixture like Kool-Aid that has a uniform composition.
What is a homogeneous mixture?
A pure substance that cannot be broken down into simpler substances.
Element
Another name for a homogeneous mixture.
What is a solution?
The materials that start a chemical reaction.
What are reactants?
Matter that takes both the shape and the volume of its container.
What is a gas?
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The name of the gaseous state of a substance that is usually a solid or liquid at room temperature.
What is a vapor?