How is Matter Classified? 1.3

Objective/Warm-Up Students will be able to distinguish between types of matter. Students will be able to distinguish between types of matter.Convert: days to minutes days to minutes 25 miles/hr to km/s 25 miles/hr to km/s

Objective/Warm-Up Students will be able to distinguish between types of matter. Students will be able to distinguish between types of matter.Convert: seconds to hours seconds to hours 320 inches/minute to yards/hour 320 inches/minute to yards/hour

Objective/Warm-Up Students will be able to convert units and calculate density. Students will be able to convert units and calculate density.Convert: seconds to hours seconds to hours 320 inches/minute to yards/hour 320 inches/minute to yards/hour

Matter Atom – the smallest unit of an element that maintains the properties of that element Atom – the smallest unit of an element that maintains the properties of that element Pure substance – a sample of matter that has definite chemical and physical properties. Pure substance – a sample of matter that has definite chemical and physical properties.

Pure Substances Element – a substance that can’t be separated or broken down into simpler substances by chemical means Element – a substance that can’t be separated or broken down into simpler substances by chemical means Symbols Symbols Common Common

Pure Substances Molecule – the smallest unit of a substance that keeps all of the physical and chem. props. of that substance – can be 1, 2 or + atoms bonded together. Molecule – the smallest unit of a substance that keeps all of the physical and chem. props. of that substance – can be 1, 2 or + atoms bonded together. Monotomic and diatomic Monotomic and diatomic

Pure Substances Allotrope – 1 of multiple different molecular or crystalline forms of an element Allotrope – 1 of multiple different molecular or crystalline forms of an element O and C O and C Compounds – a substance made up of atoms of 2 or more diff. elements chemically bonded. Compounds – a substance made up of atoms of 2 or more diff. elements chemically bonded.

Compounds Represented by formulas Represented by formulas More classifications for compounds More classifications for compounds

Mixtures Mixture – collection of 2 or more pure substances physically mixed together Mixture – collection of 2 or more pure substances physically mixed together Proportions can vary Proportions can vary Sweet tea or gold – different ratios in mixtures Sweet tea or gold – different ratios in mixtures

Types of Mixtures Homogeneous mixture – something that has a uniform structure or composition throughout (ex: vinegar, tea, saltwater, gasoline, syrup, air) Homogeneous mixture – something that has a uniform structure or composition throughout (ex: vinegar, tea, saltwater, gasoline, syrup, air) Different components can’t be seen Different components can’t be seen

Mixtures Heterogeneous Mixture – a mixture composed of dissimilar components Heterogeneous Mixture – a mixture composed of dissimilar components Examples – orange juice, salad, granite Examples – orange juice, salad, granite

Difference between mixtures and compounds Compound = chemically combined Compound = chemically combined Properties are different from components Properties are different from components Components in same ratios throughout Components in same ratios throughout Mixture = physically combined Mixture = physically combined Properties are similar to components Properties are similar to components Components in varying ratios throughout Components in varying ratios throughout