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Physical Properties & Changes
Chemical Properties & Changes
Changes in the State of Matter
Properties are used to Identify Substances
Wild Card
100
This can be observed without changing the identity of the substance.
What is a physical change?
100
This is the change of one substance into another substance.
What is a chemical change?
100
This occurs when warm, moist air contacts a cold surface.
What is condensation?
100
When placed in a hot fire a stainless-steel spoon will do this last before ice or plastic?
What is melt?
100
The process by which a liquid becomes a solid.
What is freezing?
200
These are needed to calculate a substances density.
What is its mass and volume?
200
An example of this is burning wood turning into ashes and smoke.
What is a chemical change?
200
This occurs when bubbles of gas form inside a liquid and energetically escape.
What is boiling?
200
This substances boils at 100 degrees celsius.
What is water?
200
Describes how a substance can form a new substance.
What is chemical property?
300
This is a physical change.
What is a change that can be occured without changing the substance?
300
The ability of gasoline to burn.
What is a chemical property?
300
An example of this is when a piece of dry ice (CO2) gets smaller at room temperature.
What is sublimation?
300
This is the chemical property that iron has and gold does not.
What is oxidizes or rusts?
300
The temperature at which a solid becomes a liquid.
What is melting point?
400
Besides physical characteristics, these are the five properties used to identify a substance.
What are density, heating properties, solubility, electric properties, and magnetic properties?
400
The five signs of a chemical reaction.
What is formation of bubbles, change in temparature, formation of solid, odor, and change in color?
400
This is occurring when grass wet dew slowly dries in the morning sunshine.
What is evaporation?
400
This is why a mercury thermometer would stop working at negative 39 degrees celsius.
What is it would become a solid?
400
icicles forming, candle wax hardening, molten iron hardening
What is freezing?
500
The density of silver is 10.5 g/cm cubed. This is the mass of a 3.0 cm cubed piece.
What is 31.5 grams?
500
Your dad's gift to mom, new jewelry, stains her cloths, and she becomes angry with dad. She knows it is not gold because of this reason.
What is the chemical reaction (oxidation)? It may turn green (tarnish) or red (tarnish).
500
An iron pot is used to melt gold and lead because of this reason.
What is iron has a higher melting point than gold and lead?
500
Room temperature is 23 degrees celsius. Iron, lead, gold, aluminum, and tin are all solids at room temperature because of this reason.
What is their melting points are higher than 23 degrees celsius?
500
Density x Volume
What is equal to mass?