MatterMatter

Day 1Day 1

How is matter How is matter organizedorganized??

The smallest particle of an element The smallest particle of an element that still retains the properties of that still retains the properties of

the element.the element.

atomatom

A substance made up of A substance made up of atoms that are all alike.atoms that are all alike.

ElementElement

A substance in which the A substance in which the atoms of two or more atoms of two or more

elements are chemically elements are chemically combined in fixed combined in fixed

proportions.proportions.

Compound or MoleculeCompound or Molecule

Matter composed of two Matter composed of two or more substances that or more substances that

can be separated by can be separated by physical means.physical means.

MixtureMixture

Type of matter with a Type of matter with a fixed composition (can be fixed composition (can be either an element or a either an element or a compound).compound).

Pure SubstancePure Substance

A mixture that remains A mixture that remains uniformly mixed and the uniformly mixed and the

particles are so small they particles are so small they can’t be seen with a can’t be seen with a

microscope.microscope.

Homogeneous MixtureHomogeneous Mixture

A mixture in which the A mixture in which the different materials remain different materials remain

distinct.distinct.

Heterogeneous MixtureHeterogeneous Mixture

Lab – “Nuts and Bolts Lab – “Nuts and Bolts of Matter”of Matter”

Copy definitions from Copy definitions from bookbook

Follow procedure on Follow procedure on handouthandout

Day 2 (February 27)Day 2 (February 27)

Class ObjectivesClass Objectives

Review states of Review states of mattermatter

OobleckOobleckPhase change GizmoPhase change Gizmo

Review Solid, Review Solid, Liquid, GasLiquid, Gas

Day 3 (March 3)Day 3 (March 3)Phase change notes and Phase change notes and

worksheetworksheetGraphing assignmentGraphing assignmentDensity of water labDensity of water lab

Day 4 (March 5)Day 4 (March 5)

Density problemsDensity problemsDensity of a paper clip Density of a paper clip

lablabChemical vs. physical Chemical vs. physical

properties and changesproperties and changes

DensityDensity

Mass per unit volume Mass per unit volume of a substanceof a substance

D = m/vD = m/v

What is the density of What is the density of carbon dioxide gas if carbon dioxide gas if 0.196 g occupies a 0.196 g occupies a volume of 100 mL?volume of 100 mL?

A block of wood 3.0 cm A block of wood 3.0 cm on each side has a on each side has a

mass of 27 g. What is mass of 27 g. What is the density of this the density of this

block?block?

An irregularly shaped An irregularly shaped stone was lowered into a stone was lowered into a

graduated cylinder graduated cylinder holding a volume of water holding a volume of water

equal to 2.0 mL. The equal to 2.0 mL. The height of the water rose height of the water rose to 7.0 mL. If the mass of to 7.0 mL. If the mass of the stone was 25 g, what the stone was 25 g, what

was its density?was its density?

A 10.0 cmA 10.0 cm33 sample of sample of copper has a mass of 89.6 copper has a mass of 89.6 g. What is the density of g. What is the density of

copper?copper?

A sample of iron has A sample of iron has the dimensions of 2 cm the dimensions of 2 cm

x 3 cm x 2 cm. If the x 3 cm x 2 cm. If the mass of this mass of this

rectangular-shaped rectangular-shaped object is 94 g, what is object is 94 g, what is the density of iron?the density of iron?

ChemicalChemical PhysicalPhysical

All possible All possible chemical chemical changeschanges

Observed by Observed by senses; senses;

measurable measurable propertiesproperties

Property ComparisonProperty Comparison

Change ComparisonChange Comparison

ChemicalChemical PhysicalPhysical

Old substance Old substance destroyed; new destroyed; new

substance substance formedformed

New form of New form of old substance; old substance;

no new no new substances substances

formedformed

Chemical ChangesChemical ChangesSubstance changes Substance changes composition; 1 or composition; 1 or more new substances more new substances formedformed

How do you know?How do you know?Production of a gasProduction of a gasChange in colorChange in colorFormation of a Formation of a

precipitateprecipitateProduction of new odorProduction of new odorRelease/absorption of Release/absorption of

heatheat

Physical ChangesPhysical ChangesChanges that occur Changes that occur without a change in without a change in compositioncomposition

Melting, freezing, etc.Melting, freezing, etc.DissolvingDissolving

BuoyancyBuoyancyTendency of a Tendency of a lessless dense dense

substance to float in a substance to float in a moremore dense substance dense substance

Ice in water; different Ice in water; different salt water conc. in labsalt water conc. in lab

ViscosityViscosityResistance of a fluid Resistance of a fluid to flowto flow

Stronger particle Stronger particle attraction = more attraction = more viscosityviscosity

Motor oilsMotor oils