Tuesday 9-08 and Wednesday 9-09 Classification of Matter

If you raise your hand and go quiet, we can get started quicker! The hand signal If I need your quiet attention, I’ll raise my hand and stop speaking. If you raise your hand and go quiet, we can get started quicker!

daily quiz 1-6 Obtain a periodic table and a calculator. No questions will be answered unless it is about the directions. Work by yourself. Work silently. Follow the LASA honor code. After we grade this quiz together, you’ll turn in your purple sheet.

Objectives: classification of matter Given a description, experimental data, a physical sample, or a graphic, identify a sample of matter as an element, a compound, a heterogeneous mixture, or a homogeneous mixture (solution). Distinguish between monatomic and diatomic elements, compounds, homogeneous mixtures, and heterogeneous mixtures. 1.6 Homework – Daily Quiz 1-7 Next Class HOmework

agenda Daily Quiz 1-6 2. The Sugar Water Question Classification of Matter Kahoot Classification of Matter Flowchart pg. 20 Classification of Matter Practice Phases of State + Venn Diagram / Modeling Matter Exit Ticket

The Sugar water question When 10. g of sugar is added to 500. mL of distilled water… Which of these statements is/are true? (Hint: there’s more than one answer.)

Classification of matter Kahoot Because much of today’s lesson is prior knowledge, let’s play a Kahoot to review. Pay attention during the Kahoot because you’ll need the information for the activity that follows.

Pg. 20 Using your own prior knowledge and the concepts in the POGIL activity, label each box according to the class of matter it belongs to, then define it. Some headings are done for you. Leave the spaces under “picture” blank for now. Element Diatomic Monatomic Picture: Picture: Picture: Picture: Picture:

Pg. 20 Homogeneous mixture: a mixture that is uniform Using your own prior knowledge and the concepts in the POGIL activity, label each box according to the class of matter it belongs to, then define it. Some headings are done for you. Leave the spaces under “picture” blank for now. Anything that has both volume and mass Mixture: consists of >1 type of particle Pure substance: consists of 1 type of particle Element Heterogeneous mixture: a mixture that contains visibly different parts Homogeneous mixture: a mixture that is uniform aka: Solution aka: Alloy Compound: a pure substance that consists of molecules (>1 type of atom) a pure substance that consists of atoms or molecules (1 type of atom) Diatomic Monatomic Picture: Picture: Picture: Consists of molecules Consists of atoms

Where would each of the following graphics go in the flow chart? Draw each of the following graphics into the appropriate TERMINAL box in the flow chart. Are these samples heterogeneous or homogeneous?

More on Atoms vs. Molecules…

Pg. 21 and 22 Let’s do the first two examples on pg. 21 and pg. 22 together. Think Pair Share: Using your knowledge and your notes, complete the chart on pg. 21 and the drawings on pg. 22.

Classifying matter according to the changes it undergoes If you can separate its parts by physical means - it’s a mixture, so you can… (for example) - filter it - distill it (boil off one or more of its components) … but the components are the same. The properties of each component are identical. ex. Salt water can be distilled to form salt and water (so salt water is a mixture) If a chemical reaction is required to separate its parts - it is a compound. - before the reaction, the properties of the matter will be the same throughout. - after the reaction, different properties will be observed because you have formed completely different substances. ex. Rust  Iron + Oxygen (so rust is a pure substance) ** Use your common sense here…Elements can still have chemical reactions. It’s just that compounds are more easily identified by the results of a chemical reaction.

States of matter FYI: Plasma is highly ionized and temporary and consists of free electrons and ions.

PhasES of state pg. 23 With a new partner near you, complete the following quad Venn Diagram. You should use both descriptions and drawings. Properties to consider include: Compressibility Volume Shape Molecular Arrangement (It is up to you to describe the properties accurately.)

Modeling matter – examples Describe each sample of matter as thoroughly as possible with regards to state and classification. Explain your choices. Pure substance – only one type of atom is present since only one color is used. Element – each particle consists of only one type of atom. Each particle is diatomic. Most likely a gas – large spaces exist between each particle.

Modeling matter – examples Describe each sample of matter as thoroughly as possible. Explain your choices.

Modeling matter – examples Describe each sample of matter as thoroughly as possible. Explain your choices.

Modeling matter (pg. 22) Think Pair Share: Classify each sample of matter, as shown on pg. 22. Make sure to describe each sample as thoroughly as you can. Some diagrams depict combinations – be careful!

Exit Ticket On an index card (that I am passing out), write a 3 – 5 sentence summary of what you learned today about the classification of matter. Please be as specific as possible. End of Class Procedure: Complete and turn in your exit ticket by yourself. You may not use any notes. Put your books etc. away. Wait for dismissal. Please, no phones! Clean up your table. When you are dismissed by me (not the bell), push in your chairs straight as you leave. Homework: 1.6 Homework. You will have a daily quiz at the beginning of next class.