Unit 4- The Nature of Matter

Unit 4- Lesson 1 Vocabulary  Matter  Temperature  Liquid  Volume  Solid  Gas  Define each word and complete the interactive glossary.

Develop Science Concepts Unit 4- Lesson 1  In your own words explain what matter is.  Give me three examples of liquids.  Give me three examples of solids.  Give me three examples of gasses.  Explain how matter can change state (from liquid to gas, from solid to liquid, etc…)

Do the Math- Use Division FoodMass (g)Volume (cm3)Density (g/cm3) gelatin75100 pudding90100 whipped cream50100

Unit 4- Lesson 2  Physical change  Chemical change  Reaction  Define each word and complete the interactive glossary.

What is a Chemical Change?  What is a Chemical Change?  A chemical change is when 2 substances are mixed together to form something new. This differs from a physical change, which is a substance changing physical forms but still retains its original properties. Sometimes when a mixture is made it can be hard for kids to tell if a chemical change has occurred. Such as when mixing sugar and water, the sugar appears to be no longer present so children assume a chemical change has happened when in reality the mixture can be separated back into it's original substances. There are 3 main clues that a chemical change has occurred.  There is a formation of gas which can be seen by a fizzing or bubbling  The reaction will cause heat, light or odor to be emitted  A solid is formed during the change

Unit 4- Lesson 2 Identify Types of Changes ChangeType Bacteria decomposes leaves Newspaper turns yellow in sun Water evaporates Gasoline burns in car engine Bagel toasting Crumpling aluminum foil in ball Sharpening pencil Baking a loaf of bread

The process of decomposition — the breakdown of raw organic materials to a finished compost — is a gradual complex process, one in which both chemical and biological processes must occur in order for organic matter to change into compost. It is a chemical change because live organisms that are breathing oxygen are taking part in the decomposition process. Newspapers turning yellow… Bleaching is usually an oxidation reaction, whether it is initiated by chemical bleach or by ultraviolet rays in sunlight. The result is that the formerly colored ink or pigment loses its intensity and may eventually become almost white. The chemicals, which were originally colored, have been transformed into new chemicals. Water evaporating is a change of state. Water changes from liquid into a gas. The water is still water, it’s just in a different form. Gasoline burning in an engine… Energy is produced, which is what is used to power the car. Energy transfer is an indicator of a chemical change. A gas is produced, namely CO2, H2O, and many other byproducts. A gas given off is an indicator of a chemical change.

You cannot change burned toast back to regular bread. This is a chemical change; meaning, it changes the identity. A physical change, cutting a piece of wood, changes the appearance but not the identity. Another example of a chemical change would be burning a piece of wood. Crumpling aluminum foil into a ball is changing the appearance of the foil but not changing the type of matter. The type of matter remains the same, it just looks different. Sharpening a pencil…. Another example of changing the appearance of something but the matter itself remains the same. The led was always inside the pencil, you are just changing the shape so you can use it. Baking a loaf of bread… this is an instance where the yeast is reacting with the flour and other ingredients that is causing it to rise and change. This is an example of a chemical change.

Unit 4- Lesson 4 Vocabulary  Mixture  Solution  Define these words and complete your interactive glossary.

Separating Mixture Video  id=0C17CA33-EAA2-A C5EE67D8&includeHeader=true&layout=default id=0C17CA33-EAA2-A C5EE67D8&includeHeader=true&layout=default

Separating Mixtures- Choose the best method (magnetism, filtration, sieve, evaporation, density, melting) MixtureSeparation Method Some sugar from sugar water Rice grains mixed with flour Clear water from muddy water Some salt from salty water Sawdust mixed with sand Steel buttons mixed with plastic buttons Gold from a gold and silver ring

Separating Mixtures- Choose the best method (magnetism, filtration, sieve, evaporation, density, melting) MixtureSeparation Method Some sugar from sugar waterevaporation/melting Rice grains mixed with floursieve Clear water from muddy waterfiltration Some salt from salty waterevaporation Sawdust mixed with sanddensity Steel buttons mixed with plastic buttons magnetism Gold from a gold and silver ringmelting

Now try it yourself on your worksheet. A colander is the same as a sieve(look at the top of the computer cart for what a colander looks like). Make sure to complete the science investigation on the back of the paper, as well as any questions it asks you to answer. You need to design the experiment, and explain in a step by step fashion. If you finish early you may begin Unit 4 Lesson 4 brain check.

Virtual Lab 5  k6.thinkcentral.com/content/hsp/scien ce/fusion/fl/gr05/teacher_gateway_ _/player.html?buid=SCI _FL12_DLT_G05U04L05_000_EN k6.thinkcentral.com/content/hsp/scien ce/fusion/fl/gr05/teacher_gateway_ _/player.html?buid=SCI _FL12_DLT_G05U04L05_000_EN

Unit 4- Lesson 6 Vocabulary  Atom  Element  Atomic theory  Compound  Define these words and complete the interactive glossary.

Proton Electron

Brain Pop Connections  rvationofmass/ rvationofmass/  / /  rchangingstates/ rchangingstates/  rtychanges/ rtychanges/  ofmatter/ ofmatter/

Brain Pop Connections  oundsandmixtures/ oundsandmixtures/  cmodel/ cmodel/  / /