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Matter. Day 1 How is matter organized ? The smallest particle of an element that still retains the properties of the element. atom.

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Presentation on theme: "Matter. Day 1 How is matter organized ? The smallest particle of an element that still retains the properties of the element. atom."— Presentation transcript:

1 Matter

2 Day 1

3 How is matter organized ?

4 The smallest particle of an element that still retains the properties of the element. atom

5 A substance made up of atoms that are all alike. Element

6 A substance in which the atoms of two or more elements are chemically combined in fixed proportions. Compound or Molecule

7 Matter composed of two or more substances that can be separated by physical means. Mixture

8 Type of matter with a fixed composition (can be either an element or a compound). Pure Substance

9 A mixture that remains uniformly mixed and the particles are so small they can’t be seen with a microscope. Homogeneous Mixture

10 A mixture in which the different materials remain distinct. Heterogeneous Mixture

11 Lab – “Nuts and Bolts of Matter”  Copy definitions from book  Follow procedure on handout

12 Day 2 (February 27)

13 Class Objectives  Review states of matter  Oobleck  Phase change Gizmo

14 Review Solid, Liquid, Gas

15 Day 3 (March 3)  Phase change notes and worksheet  Graphing assignment  Density of water lab

16 Day 4 (March 5)  Density problems  Density of a paper clip lab  Chemical vs. physical properties and changes

17 Density  Mass per unit volume of a substance  D = m/v

18 What is the density of carbon dioxide gas if 0.196 g occupies a volume of 100 mL?

19 A block of wood 3.0 cm on each side has a mass of 27 g. What is the density of this block?

20 An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2.0 mL. The height of the water rose to 7.0 mL. If the mass of the stone was 25 g, what was its density?

21 A 10.0 cm 3 sample of copper has a mass of 89.6 g. What is the density of copper?

22 A sample of iron has the dimensions of 2 cm x 3 cm x 2 cm. If the mass of this rectangular-shaped object is 94 g, what is the density of iron?

23 ChemicalPhysical All possible chemical changes Observed by senses; measurable properties Property Comparison

24 Change Comparison ChemicalPhysical Old substance destroyed; new substance formed New form of old substance; no new substances formed

25 Chemical Changes  Substance changes composition; 1 or more new substances formed

26 How do you know?  Production of a gas  Change in color  Formation of a precipitate  Production of new odor  Release/absorption of heat

27 Physical Changes  Changes that occur without a change in composition  Melting, freezing, etc.  Dissolving

28 Buoyancy  Tendency of a less dense substance to float in a more dense substance  Ice in water; different salt water conc. in lab

29 Viscosity  Resistance of a fluid to flow  Stronger particle attraction = more viscosity  Motor oils

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