Properties
What is the definition of a physical property?
A characteristic that can be observed or measured without changing the sample’s composition
What is the definition of a chemical change?
A change that involves one or more substances turning into new substances
What kind of property is mass?
Extensive
definite shape and volume
Solid
Shows the relationship between the reactants and products in a chemical reaction.
Law of conservation of mass
Which of these is a chemical property of copper?
Density=8.92g/mL
Forms a blue solution when mixed with ammonia
Reddish, brown color
Forms a blue solution when mixed with ammonia
Chemical or Physical Change? A substance dissolves in water.
Physical
The temperature of the air outside is 25 degrees Celsius
Intensive
Gas
have no definite shape or volume. They expand to fill their container
Particles of this state of matter move the fastest
Gas
Physical or chemical? Water is ice at 0 degrees Celsius
Physical
T or F: Burning wood is a chemical change
T
What kind of property is density?
Intensive
Phase change
transition of matter from one state to another
In a laboratory, if you wanted to make 148 grams of salt and you started with 63.1 grams of sodium. How much chlorine would you need? (Record your answer with the correct units)
84.9 grams
Physical or chemical? Methane undergoes combustion
Chemical
Name 3 words that describe a chemical change
Burn, Corrode, Ferment, Rust, Oxidize, Tarnish, Explode, Rot
The average elephant weighs 6,000 kg
Extensive
Vapor
refers to the gaseous state of a substance that is a solid or liquid at room temperature.
In real life, can particles of any substance stop moving.
No. 0 Kelvin is theoretical
List 2 physical and 2 chemical properties
Physical: color, density, melting point, boiling point, hardness, solubility, ductility, malleability, conductivity, and odor
Chemcial: flammability, toxicity, reactivity, and heat of combustion
Name 5 words that describe a physical change
Boil, Condense, Crumple, Melt, Crush, Freeze, Grind, Vaporize
List 3 Intensive properties of an gas can
red color, color of the gas (translucent), metal or plastic container, yellow nozzle, temperature of gas
Dependent on what the substance is, not how much there is
Intensive
When you apply heat energy to a substance, where does the energy go?
Into the substance (particles)