Matter, Measurementand Calculations

Chemistry

Scientific method

Scientific method

Scientific method

Matter

Physical properties

Chemical properties

Chemical vs.physical change

Example

A model of matter

Types of molecules

Classification of matter

Mixtures

Pure substances

Pure substances

Data, results and units

Units are important

Example

Conclusion

Measurements in chemistry

Measurement in chemistry

Example

Measurement in chemistry

Metric prefixes

SI units

Example. Metric conversion

Conversion of units

Common conversion factors

Example

Example

Example

Uncertainty of data

Accuracy

Precision

Accuracy and precision

Accuracy and precision

Types of errors

Errors

Significant figures

Significant figures

Significant figures: Rules for zeros

Significant figures:Rules for zeros

Scientific notation

Exponents

Exponents

Exponents

Scientific notation

Scientific notation

Scientific notation

Examples

Significant figuresand calculations

Simplified rules forsignificant figures

Example

Rounding off numbers

Rounding off

Using units in calculations.

Temperature conversion

Order for operations

Order for operations

Example. oF to oC

Example. oF to K

Density

Example.Density calculation

Rearranging an equation

Rearranging an equation

ExampleDensity calculation

Specific gravity

Specific gravity measurement