Chem 11 Unit 2

Interpretation

explanation of and observation

data

collected observations or measurements

controlled experiment

experiment where only one variable is changed

theory

well tested explanation supported by evidence

law

there has been zero exceptions to a statement if its a law

substance

matter with specific uniform composition

physical property

can be determined without chemical change( coulour density

chemical properties

requires a chemical change (explosive)

maleability

streatch it

ductile

streach it

viscosity

resistance to liquid flow

diffusion

movement from high concentration to low

solution

clear homogeneous mixture composing of a solvent and it resolved solute example salt and water

Suspension

Cloudy mixture of small undissolved solid particles in a liquid for example milk

Pure substance

made up of only one type of molecule

Compound

Made up of more than one type of atom for example water

Element

made up of only one type of atom

Homogeneous mixture

appears to be one substance components or non-differentiable

Heterogeneous mixture

mixture in which components or visually differentiable more than one face that may not be the same state

Classify this milk

suspension

Classify this copper two chloride dissolved in water

solution

Classify this Granola

mechanical mixture

Classify this clear purple water-based liquid

solution

Classify this copper

Element

Classify this water

compound

Gold is what

pure substance it's just one atom

What is sugar

sugar is a compound it's a pure substance that are made up of two or more elements chemically combined

What is a suspension

solid pieces are scattered throughout a liquid

What is the solution such as sea water

the substances are so completeley mixed they look like one substance

In what kind of mixture can you see two or more parts of the mixture

mechanical mixture

What is a compound

a pure substance made up of two or more kinds of atoms

What is an element

a pure substance made up of one kind of atom

What is an alloy

made by melting different metals and mixing them together

What does a suspension look like

particles are large enough to make it cloudy

What is a solution

a mixture that looks like a pure substance particles of all substances are completely mixed together for example Kool-Aid

What is a mixture

more than one pure substance physically mixed together