Classification of Matter Activity and Notes

Common core connection Objective Today I will be able to: Differentiate between elements, compounds and mixtures by completing a close reading Differentiate between a element, compound, homogeneous or heterogeneous mixture Informal assessment – monitor student interactions as they complete the practice Formal assessment – analyze student responses to the exit ticket and concept maps Common core connection Build Strong Content Knowledge Value Evidence Reason abstractly and quantitatively

Lesson Sequence Evaluate: Warm-up Explain: Element, compound mixture close reading Explain: Classification of Matter Notes Elaborate: Element, Compound Mixture Practice Evaluate: Exit Ticket

Warm - Up Complete the first column of the close reading worksheet Mia took data to find the density of a piece of metal using the water displacement method Mass of metal: 42 g Initial volume of water: 86 mL Final volume of water: 90 mL (after adding the metal) What is the density of the metal?

Objective Today I will be able to: Differentiate between elements, compounds and mixtures by completing a close reading Differentiate between a element, compound, homogeneous or heterogeneous mixture

Homework Complete the Element, Compound, Mixture WS STEM Fair Data and Graphs Due October 10

Agenda Warm-up Element, compound mixture close reading Classification of Matter Notes Element, Compound, Mixture Practice Exit Ticket

Element, Compound, Mixtures Close Reading Use the textbooks in the classroom to complete the worksheet

Classification of Matter Notes

Classification of Matter Notes Pure Substance Mixtures Elements Compounds Homogeneous Heterogeneous

Mixtures

Mixtures Two or more substances together which are NOT chemically combined Properties - Substances keep separate identities and properties - Substances may be present in any amount - Substances can be separated by simple physical means (filtering, magnet, etc)

Mixtures Heterogeneous - not the same throughout (trail mix, bird seed) - Particles are large enough to be seen - Mixtures separate on standing

Mixtures Homogeneous - the same throughout (salt water) - Particles are small and not easily recognized – uniform mixture of particles - Does not settle on standing

Mixtures Solution – example of a homogeneous mixture - one substance dissolved in another (lemonade, ocean water, gold jewelry) - Particles are very small and evenly spread out - Cannot be separated by simple physical means

Ways to Separate Mixtures Filtration Evaporation Chromatography Distillation

Pure Substances

Elements Pure substance that cannot be broken down into simpler substances by ordinary chemical means (Iron, Copper, Tungsten)

Elements All matter is composed of elements Have definite properties Made up of one type of atom Periodic Table organizes elements according to their properties

Compounds Two or more different elements combine in a chemical reaction New substances with new properties are formed Elements combine in fixed proportions - water (H2O) always has two hydrogen atoms and one oxygen atom

Compounds Examples of Fixed Proportions C3H7OH - Propanol - 3 carbon, 8 hydrogen, 1 oxygen (NH4)2O – Ammonium Oxide - 2 nitrogen, 8 hydrogen, 1 oxygen

Compounds Two elements = binary compound (CO2) Three elements = ternary compound (C6H12O6)

Element Compound Mixture Practice Complete the practice at your desk. Problems not completed in class will be completed for HW

Exit Ticket Convert the temperatures to Kelvin (K) 0 oC -15 oC 25 oC Convert the temperatures to Celsius (oC) 236 K 325 K 271 K