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Properties of Matter Chemistry Topic 1.

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Presentation on theme: "Properties of Matter Chemistry Topic 1."— Presentation transcript:

1 Properties of Matter Chemistry Topic 1

2 Classification of Matter
Complete Properties of Matter Activity 1 Instructions: Obtain the envelope marked Properties of Matter Activity 1. Inside the envelope you should have 12 cards. Your goal is to divide these cards into 3 or 4 groupings. There will not be an equal number of cards in each group. Once you have decided your groups you must also prove a reason why you decided on these groups. When you have completed this activity have Ms. Cobler check your groupings. When Ms. Cobler has approved of your categories; copy down the set of cards making up each group, as well as the vocabulary word that defines that particular group.

3 Vocabulary Element Compound Homogenous Mixture Heterogeneous Mixture
A chemical element or element is a species of atoms having the same number of protons in their atomic nuclei (i.e. the same atomic number, Z). There are 118 elements that have been identified, of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements. Compound A compound is a substance formed when two or more chemical elements are chemically bonded together. Two types of chemical bonds common in compounds are covalent bonds and ionic bonds. The elements in any compound are always present in fixed ratios. Homogenous Mixture Heterogeneous Mixture

4 States of Matter Complete the following prediction questions before starting the simulation: Describe how atoms of a solid differ from atoms of a liquid. Include an illustration.  Describe how atoms of a liquid appear compared to a gas. Include an illustration. What happens to atoms when you add heat to them? After you have completed the prediction questions follow the link below to access a States of Matter simulation. Click the ‘play’ button to start the simulation. Advance to the next slide for questions and instructions for the simulation.

5 States of Matter SIMULATION INSTRUCTIONS AND QUESTIONS
Play around with the first tab for awhile, trying everything out. The circles How does solid Neon or Argon look compared to liquid Neon or Argon? How about liquid Neon or Argon versus gas Neon or Argon? How do the Oxygen and Water molecules compare to Neon and Argon? Draw each. Why do you think that could be? Can you get the molecules to stop wiggling? If so, how? What happens to the molecules when heat is added?

6 This is a video, hit play when the button appears

7 This is a video, hit play when the button appears

8 Complete the following worksheets
Worksheet Activities Complete the following worksheets Properties of Matter (1 page) Elements, Compounds, & Mixtures (2 pages)

9 Phase Change Complete the Phase changes and heating curve diagram worksheet before moving on, have Ms. Cobler check your answers. Definition: When a substance changes its phase or state. Solid  Liquid  Gas Phase changes can also be shown symbolically with a heating curve graph like the one seen on the right.

10 Properties of Matter Phase changes are just one example of physical change in matter. Changes in chemistry are often referred to as one of two general changes, Physical or Chemical. These are the most general types of matter changes. The chart to the left should help you decide whether a change is physical of chemical. Watch the video following this slide for more information on Physical and Chemical changes.

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12 Properties of Matter Substances Mass Volume
Melting/Freezing point (Celsius) Boiling point (Celsius) Density Water 10g 10mL 100° 1g/mL 100g 100mL Olive Oil 9.2g 3.9° 299° 0.92g/mL 92g Gold 193g 1064° 2970° 19.3g/mL 1930g Aluminum 27g 660° 2470° 2.7g/mL 270g Which of the 5 properties listed in the table (Mass Volume, melting/freezing point, boiling point, and density) depend on how much of the substance is present and which of the 5 properties remain the same no matter how much of the substance is present? – Check your answer with Ms. Cobler.

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15 Identifying an Unknown Substance
We use Intensive properties to identify unknown substances. You will learn more about a few specific intensive properties and how to calculate these intensive properties so you may identify unknown substances. Outline of the next five slides Video Activity Practice

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18 Properties of Matter and Comparing heating curves
FACTS Surface Tension 42 drops of water fit on a penny 29 drops of rubbing alcohol fit on a penny Water has a greater surface tension than rubbing alcohol (The attractive forces in water are greater than the attractive forces in rubbing alcohol). Substance 1 is water Substance 2 is rubbing alcohol Make a statement about surface tension and melting/freezing point. Make a statement about surface tension and boiling point. Share these statements with Ms. Cobler.

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21 Density Practice Density = Mass/Volume
Element Symbol Density g/cm3 Aluminum Al 2.70 Copper Cu 8.96 Gold Au 19.3 Iron Fe 7.87 Lead Pb 11.3 Nickel Ni 8.90 Potassium K 0.89 Silver Ag 10.5 Sodium Na 0.97 Tin Sn 7.26 Uranium U 19.1 Zinc Zn 7.14 Mass is generally measured in Volume is generally measured in cm3 or mL kilograms (kg) and grams (g) 1 cm3 = 1 mL 1000 g = kg 1000 mL = 1 L Element Density Mass Volume Iron 7.87 g/cm3 30g mL Sodium 0.97 g/cm3 g 70mL g/cm3 1351g 90mL 27g 10mL Copper 8.96 g/cm3 170mL Fill in the missing information in the table above. Have Ms. Cobler check your answers.

22 Review What is matter? How do you measure it? What are the states?
How do the attractive forces relate to boiling points? How do they relate to melting points? What do the three states of matter look like at a microscopic level? What is a pure substance? What are the two kinds of pure substances? What do they look like at a microscopic level? On the heating curve below, where is the substance a solid? A liquid? A gas? Where is the boiling point? Where is the melting point? What is the main characteristic of a mixture? What are the two kinds of mixtures? What do they look like at a microscopic level? What is a chemical property? What is a physical property? What are the two kinds of physical properties? Which kind is used to identify a substance? Which kind is used for taking measurements? What kinds of things happen during a physical change? What kinds of things happen during a chemical change? What are the two kinds of attractive forces? What is meant by attractive force? During which phase or state of matter are the attractive forces strongest? When are they the weakest? How do attractive forces relate to surface tension?


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