Phase Changes
What is the type of change for an ice cube turning to water?
Melting
What is a property?
Something describes matter.
An example of a chemical change that usually involves fruit.
What is a pure substance?
Matter that always has the exact same composition and properties.
What is Chemistry?
The study of Matter and how it changes.
What is one phase change in which energy must be added?
Any of these: Melting, Sublimation, Evaporation/Added
Is viscosity an example of a physical or chemical property?
Physical.
If I bend a rubber band, what type of physical change is it?
Shape change.
What is a mixture?
Combination of 2 or more pure substances.
These 3 things are all not matter.
Light, sound, and electricity.
How would one describe the phase change between a solid turning into a gas?
Sublimation
If I wanted to use a substance to conduct electricity what substance would I use?
Metals.
What is the word to describe a substance that is used as a starting material in a chemical reaction?
Reactant.
What is the difference between an element and a compound?
An element is a substance that cannot be broken down into anything smaller while a substance is made of two or more elements.
What is the density of an object that has a mass of 30 grams and a volume of 5 mL? (Include units).
6 g/mL
The type of phase changes that results in energy being taken away.
What type of phase changes are Deposition, Condensation, and Freezing?
What is the density of water?
What is the difference between endothermic and exothermic?
Endothermic releases energy while exothermic absorbs energy.
What is the difference between immiscible and miscible?
Miscible substances are 2 or more liquids that dissolve in one another while immiscible substances are made of 2 or more liquids that don't mix into one another.
What is energy's role?
Energy can be thought of as the ability to move or change matter or energy must be added or removed to have a phase change.
How would one turn a gas into a solid and then into a gas again and finally into a liquid?
The way is by Deposition, Sublimation, and finally Condensation.
Density= Mass/Volume
What is the type of change that is both in chemical and physical change?
Color change.
Name one example for a Solution, Suspension, and a Colliod.
Kool-Aid(salt water and soda), Oil and Water(sand and water), and Jelly(paint and mayo).
What are the 5 main physical properties?
Conductivity, Viscosity, Malleability, Hardness, and Density.