Ch. 13 Characteristics of Matter Matter’s the Word Property Owners What’s my Change? Are we a Good Mix Think Critically Mind Trap

Matter’s the Word 100 The ________ of a substance is the temperature at which the liquid form of the substance changes to gas θ

Matter’s the Word 200 ________ is the ability of a material to go into a solution. θ

What’s my Function? 300 How is the density of a substance related to its mass and its volume? θ

Matter’s the Word 400 How do solutes differ from solvents? Include a specific solution in your answer. θ

Property Owners 100 How are physical and chemical properties useful? θ

Property Owners 200 A characteristic of a material that can be observed with the senses is ___________. θ

Property Owners 300 Which of the following is not a physical property of matter? a.Conductivity b.Density c.Reactivity d.Solubility θ

Property Owners 400 Don’t swim outdoors during a thunderstorm! A lightning strike could send an electric charge through the water to your body. Which physical property of water explains this safety tip? θ

What’s my Change? 100 What happens to substances during a chemical change? θ

What’s my Change? 200 When an electric current is passed through a sample of water, bubbles of gas form. Some of this gas will burn when lit. What can you infer about the type of change taking place? θ

What’s my Change? 300 When chemical reactions occur, matter is conserved. Explain what that means. £

What’s my Change? 400 Rust forms when iron reacts with oxygen. Salt and water act as catalysts in the reaction between iron and oxygen. Explain why a car owned by someone who lives in Hawaii might rust more quickly than a car owned by someone who lives in Montana. θ

Are we a Good Mix? 100 How are solutions different from other mixtures? θ

Are we a Good Mix? 200 True or False Bronze is an alloy of copper and tin that combines the best properties of both. Define alloy. θ

Are we a Good Mix? 300 Mia makes a delicious soup broth. She wants to separate the solid ingredients from the broth. What method could she use? θ

Are we a Good Mix? 400 When you mix vinegar and baking soda, the substances combine to form a new substance, Carbon Dioxide, CO 2. Is Carbon Dioxide a mixture? Explain. θ

Think Critically 100 Describe three simple tests you could use to help determine if a colorless, odorless liquid is pure water. θ

Think Critically 200 Two students conduct an experiment to determine how much sugar will dissolve in a beaker containing 100 mL of pure water. After slowly adding an unknown amount of sugar to the water, they see a few grains on the bottom of the beaker not dissolving. How can the students determine the amount of sugar that dissolved in the water? θ

Think Critically 300 Saturated fats are generally solid at room temperature. Unsaturated fats are generally liquid (oil) at room temperature. In general, which kind of fat has a higher melting point? Explain your answer. θ

Think Critically 400 Lava lamps contain two different liquids. As one of the liquids is heated at the base of the lamp, its density changes and it rises to the top. At the top, the liquid cools, its density changes again, and it starts to sink. Describe the density changes. θ

Mind Trap 100 Slip Shot has a bow and a bunch of arrows. If Slip shoots the first arrow at exactly noon and he shoots one arrow every minute thereafter until one o’clock, how many arrows will he have shot? θ

Mind Trap 200 After the new Canon Law that took effect on November 27 th, 1983, would a Roman Catholic man be allowed to marry his widow’s sister? θ

Mind Trap 300 When asked how old she was, Suzie replied, “In two years I will be twice as old as I was five years ago.” How old is she? θ

Mind Trap 400 A man, his wife, and their two sons come to a river they wish to cross. They find a rowboat on the river bank; however, the boat can only carry a maximum of 150 pounds at a time. Both the man the woman weigh 145 pounds each. Their sons weigh 75 pounds each. How will they get across the river using the boat, and how many trips will it take? θ

Matter’s the Word 100 Solution: BOILING POINT ۩

Matter’s the Word 200 Solution: SOLUBILITY ۩

Matter’s the Word 300 Solution: DENSITY IS MASS DIVIDED BY VOLUME ۩

Matter’s the Word 400 Solution: SOLUTES – ITEM BEING DISSOLVED SOLVENTS – ITEM (LIQUID) USED TO DISSOLVE EXAMPLE: HOT COCOA= MIX + WATER ۩

Property Owners 100 Solution: THEY CAN BE USED TO IDENTIFY DIFFERENT MATERIALS AND TO DISTINGUISH ONE MATERIAL FROM ANOTHER. ۩

Property Owners 200 Solution: PHYSICAL PROPERTIES ۩

Property Owners 300 Solution: C. REACTIVITY ۩

Property Owners 400 Solution: ELECTRICAL CONDUCTIVITY IF LIGHTNING STRIKES WATER, THE ELECTRIC CHARGE COULD TRAVEL THROUGH THE WATER AND CAUSE AN INJURY ۩

What’s my Change? 100 Solution: NEW SUBSTANCES ARE FORMED WITH NEW IDENTITIES AND PROPERTIES ۩

What’s my Change? 200 Solution: A CHEMICAL CHANGE OCCURS; WATER, EVEN WHEN IT IS GAS, DOES NOT BURN. THE GAS THAT PRODUCES THE BUBBLES MUST BE SOME SUBSTANCE OTHER THAN WATER. ۩

What’s my Change? 300 Solution: MATTER IS NOT DESTROYED. IT CHANGES INTO OTHER KINDS OF MATTER, BUT THE TOTAL MASS OF ALL THE MATTER REMAINS THE SAME. ۩

What’s my Change? 400 Solution: CONDITIONS IN HAWAII ARE HUMID AND THE AIR NEAR THE OCEAN CONTAINS SOME SALT. MONTANA HAS VERY DRY CONDITIONS AND IS FAR FROM SALT WATER. ۩

Are we a Good Mix? 200 Solution: TRUE ALLOY = MIXTURE OF TWO OR MORE METALS, OR A MIXTURE OF A METAL AND ANOTHER SOLID. ۩

Are we a Good Mix? 100 Solution: SOLUTIONS ARE MIXTURES IN WHICH MOLECULES ARE EVENLY MIXED. OTHER MIXTURES MAY HAVE DIFFERENT AMOUNTS OF MATERIAL DISTRIBUTED UNEVENLY. ۩

Are we a Good Mix? 300 Solution: FIRST, SHE COULD STRAIN THE SOUP TO REMOVE THE SOLIDS. THEN SHE COULD USE THE BOILING POINT TO SEPARATE THE SOLUTION. BY BOILING OFF THE WATER, SHE COULD COLLECT THE CRYSTALS OF BROTH FLAVORING. ۩

Are we a Good Mix? 400 Solution: NO; IF THE TWO SAMPLES ARE PURE, THEN THE COMINATION OF THE TWO IS ALSO PURE. IF THE TWO ORIGINAL SAMPLES ARE MIXTURES, THEN THE COMINATION IS ALSO. ۩

Think Critically 100 Solution: APPLY HEAT TO DETERMINE BOILING POINT. REMOVE HEAT TO DETERMINE FREEZING POINT. MEASURE VOLUME AND MASS TO DETERMINE DENSITY TRY TO DISSOLVE A KNOWN SOLUTE ۩

Think Critically 200 Solution: ALLOW THE WATER TO EVAPORATE AND WEIGH THE SUGAR THAT REMAINS. ۩

Think Critically 300 Solution: SATURATED FATS HAVE HIGHER MELTING POINTS, BECAUSE THEY ARE SOLIDS AT ROOM TEMPERATURE. ۩

Think Critically 400 Solution: YOU CAN TELL THAT THE LIQUID BECOMES LESS DENSE WHEN IT IS HEATED, BECAUSE THINGS THAT ARE LESS DENSE THAN A SURROUNDING FLUID WILL FLOAT. ۩

Mind Trap 100 Solution: Sixty-one. The first arrow was shot at 12:00, the 60 th arrow was shot at 12:59, and the 62st arrow was shot at 1:00. ۩

Mind Trap 200 Solution: This would not be an option for this man because he would be dead! ۩

Mind Trap 300 Solution: Suzie is 12 ۩

Mind Trap 400 Solution: It will take five trips. 1.The two boys cross together, and one comes back. 2.The mother rows across and the boy who was waiting, rows back. 3.The two boys cross together again. One stays with is mother and the other rows back to his waiting father. 4.The the father rows across and joins his wife. The boy who was waiting with his mother then rows back to where his brother is waiting. 5.The two boys row back and join their parents. ۩