Lesson 8 Types of Matter

Transcription

1 Lessn 8 Types f Matter

2 D Nw 6Ga, 6I Take ut HW 6.13 t be checked. In CJ, cpy dwn inf frm CJ bard. Keep CJs ut and pen n desk. On DO NOW PAGE #4, cpy and answer the questins: 1. In KCl (aq), is the slute and is the slvent. 2. If 5.3 g f salt is disslved int water, yu ve made a. 3. Is Cl 2 an element r cmpund? Is it a mlecule? 4. A cmpund f MgSO 4 has atm(s) f magnesium and atm(s) f xygen.

3 GRADE AUDITS EVERYTHING LOOKS GOOD? SIGN IT TO SHOW YOU VE REVIEWED IT TURN IT INTO THE PILE IN THE BACK MISTAKES? MARK THE MISTAKE AND WRITE A COMMENT TO EXPLAIN TURN IT INTO THE PILE IN THE BACK SIGN IT TO SHOW YOU VE REVIEWED IT

4 D Nw 6Ga, 6I Take ut HW 6.12 t be checked. In CJ, cpy dwn inf frm CJ bard. Keep CJs ut and pen n desk. On DO NOW PAGE #4, cpy and answer the questins: 1. What is the chemical symbl fr Lead? 2. What are the 3 subatmic particles and where are they lcated within the atm? 3. What is the difference between hmgeneus and hetergeneus mixtures?

5 D Nw Page #4 WILL BE TURNED END OF THIS WEEK

6 Daily Participatin Grade (5pts/day) Grade is based upn cmpletin f the daily D Nw, writing assignments in the CJ, arriving t class with all necessary materials including pencils, ntes, and calculatrs, demnstrating apprpriate classrm behavir and actively participating in class.

7 HW Check CHECK AND CORRECT YOUR HW

8 TESTS WILL BE RETURNED AT THE END OF CLASS

9 TEST #1 RESULTS Keep in assessments tab in binder HIGHLY SUGGESTED = D Test Crrectins (NOT FOR A GRADE) but t help yu understand the crrect answers. Grade f C r belw = definitely d Test crrectins, I m happy t help in Student Hurs

10 GP1 GRADE AUDITS WILL BE HANDED OUT THIS WEEK

11 Binder Cleanut Keep in daily binder Current D Nw sheet Lessns 6, 7, 8 HW 6.11 nward Archive: Everything cvered n Test #1 (ntes, HW, D Nws) Yu ll need it all t study fr Test #2, 3, etc. and Pre Cmps/Cmps

12 Lessn 8 Types f Matter

13 Matter Pure substances Mixtures Elements Cmpunds Hmgeneus Hetergeneus

14 Matter: mass space anything that has and takes up Examples f matter: Examples that are NOT matter:

15 Pure substances: Elements and Cmpunds cnstant cmpsitin a material that has a (is hmgeneus) and cnsistent prperties thrughut the sample has ne type cnsists nly f f atm, mlecule, r cmpund Examples f pure substances: tin, sulfur, diamnd, water, pure sugar (sucrse), table salt (sdium chlride), baking sda (sdium bicarbnate), element r cmpund *any in its pure frm wuld be a pure substance*

16 Element: fixed cmpsitin has a as it cntains nly f atm prtns ne type identity f an element is determined by the in the nucleus rdinary chemical means Cannt be brken dwn by prperties Will nt retain its if separated Each element has an abbreviatin f ne and r mre lwercase letters capital letter maybe ne. All are n the Peridic table. Sulfur = Nitrgen = Sdium = Gld =

17 Sme elements are = diatmic mlecule f tw atms bnded tgether exist in elemental frm as a alne Yu ll never find an xygen r nitrgen atm. They ll be O 2, H 2 O, MgO bnded t sme ther element. Examples: there are tw f that atm Frmula: Cl 2, H 2. The subscript 2 indicates that. Other examples f elements:

18 atms Mlecule: refers t tw r mre that are chemically cmbined. O 2, H 2 O, C 6 H 12 O 6, N 2 Examples: Cmpund: different elements Refers t tw r mre that are chemically cmbined. chemical means (reactins) Can be separated by Examples:

19 Hw many different types f elements are in the cmpund HBrO 3? Hw many atms f carbn are in ne cmpund f sucrse C 12 H 22 O 11? 3 12

20 Atm: defining structure f elements basic units f matter and the prtns, neutrns and electrns made up f three particles:

21 Mixtures: Hmgeneus and Hetergeneus tw r mre different substances a material made up f which physically are mixed prperties differ because separated cmpnents can be cmpsitin is nt fixed

22 1. Hmgeneus mixture: The substances are s distinguish that it is difficult t ne substance in the mixture frm anther; appears t cntain nly ne substance evenly distributed a slutin. Als knwn as.

23 Brass: yellw ally f cpper and zinc

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26 Slutins can be mixtures f multiple gases, liquids, r slids. All substances must be in the same phase. Examples: Gas slutin: Air (78% N 2, 21% O 2, almst 1% Argn) Slid slutin: Steel (mstly Irn with Carbn, Magnesium, ther elements) Liquid slutin: Cffee, sugar water, salt water, nail plish remver The slvent is always in greater abundance cmpared t the slute.

27 SOLUTIONS PRACTICE: Identify the slute and slvent in the fllwing hmgeneus mixtures: a) Rsanna put rubbing alchl n the grass stain that was n her sck. grass stain Slute: b) Justin added a little sugar t his tea because it tasted bitter. sugar Slute: c) The tea frm Mia s tea bag clred the water as it brewed. tea Slute: d) Allie s ring is 14K gld (58.3% gld, 30% silver, and 11.7% cpper). silver, cpper Slute: rubbing alchl Slvent: water Slvent: water Slvent: gld Slvent:

28 nticeably different 2. Hetergeneus mixture: The parts f the mixture are frm ne anther Examples:

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30 Cllid medium Particles are in size ( nm) a beam f light May be seen in. milk, dust particles in air Examples: Suspensin large Particles are in size (ver 1000 nm) yu shake it up Particles settle ut by gravity unless. pulpy range juice, green juice, snw glbe Examples:

31 Tyndall Effect

32 Suspensins

33 Hmgeneus Hetergeneus Particle size differs between slutins, cllids, and suspensins. Atms Ins Small mlecules Clumps f atms, ins, r mlecules Large mlecules Large clumped particles Mineral grains (sand)

34 Cnsider the cntainers belw. Which f these are mixtures? pure substances? Which cntain nly cmpunds? nly elements

35 Cnsider the cntainers belw. Which f these are mixtures? pure substances? Which cntain nly cmpunds? nly elements?

36 Classify: (element, cmpund, hmgeneus mixture, hetergeneus mixture) 1. ammnia 2. Fe 2 O 3 (s) 3. sdium 4. air 5. milk 6. sea water 7. water + sand 8. natural gas 9. white vinegar 10. mercury 11. NaCl (aq) C 13. fried rice 14. gasline k gld

37 Mixtures can be physically separated.

38 Decanting Separates tw immiscible liquids r liquids frm undisslved slids by puring ff layers

39 Magnets Separates magnetic frm nn magnetic substances

40 Centrifugatin Uses spinning and centrifugal frce t separate fluids, gas r liquid, based n density

41 Filtratin Separates liquids frm slids by using a filter paper with pres smaller than the slid; liquids and slutins pass thrugh filter

42 Evapratin / Vaprizatin Separates disslved slids ut f slutins.