Classifying Matter
Substances can be classified into:
(Pure) substances and Mixtures
Salty water, candy, muffins, oil and water are:
Mixtures
All the matters are made up of what?
atoms and molecules
What is a Property?
Something that describes matter
what are the 4 vocabulary for changes?
reactant, product, exothermic, and endothermic
What is Chemistry and Matter?
Chemistry is the study of matter and how it changes. Matter is anything that takes up space or/and has mass and volume
The three classification of mixtures
Solution, suspension, colloid
what are the 3 states of matter?
gas, solid, and liquid.
Describing how a substance REACTS when it changes is
A chemical Property
whats a chemical change?
when a substance changes into one or more new substances
What are (Pure) Substances?
Elements, Compounds and Molecules
Oil and water is an example of:
Immiscible
what is it called when going from solid to liquid to gas then back?
phase change
What are Physical Properties?
Conductivity, Viscosity, Malleability, Hardness, Density
what are examples of physical change, give 3
breaking glass, shredding paper, and braiding hair
What types of Mixtures are there?
Heterogenous, Homogenous, Immiscible, Miscible
Solutions are also known as:
Homogeneous mixture
what are the 6 phase changes?
melting, evaporation, deposition, sublimation, condensation, and freezing
What is the mathematical model for determining whether an object will float on water?
Mass divided by volume, or D=m/v
examples of chemical change, give 3
burning wood, rotting fruit, and baking a cake
What is not matter?
Light, Sound, Electricity, and fear
Boiling salt water to make freshwater
Distillation
what's the similarities of the law of conservation of mass and the law of conservation of energy?
they both can't be created or destroyed
It changes by either combining with other elements or breaking apart into new substances:
Chemical Properties
what are the differences of exothermic and endothermic?
exothermic releases energy when it has a chemical reaction and endothermic absorbs energy when it has a chemical reaction