Science Jeopardy $100 $200 $300 $400 $500 Chemical Reactions Law of Conservation of Mass Acids and Bases The Chemistry of Living Things Density Buoyancy $100 $200 $300 $400 $500 Type in your category names. Then go to each slide and type in your questions and answers for each category. Slides start with # 2 in the top left hand corner and move down to the end of the category then go to the top of the next category to the right. (2-6 then 7-11 etc.) When you run the power point and you click on the dollar amount the question will show up. Click the space bar to see the answer. Click MAIN to return to the category page. The dollar amount will change color to indicate the question has already been used. To reset the game, close the power point and reopen it. If you type .pps at the end it will open in a slideshow. If you type .ppt it will open to edit. Problems contact wpearson@sand.net Have Fun!

The 6 after the H in C3H6 is called a ___________. Subscript Main

What are the reactants in the following chemical equation What are the reactants in the following chemical equation? 2C2H6 + 7O2 4CO2 + 6H2O 2C2H6 + 7O2 Main

In the chemical equation 2C2H6 + 7O2 4CO2 + 6H2O, what does the arrow mean? Yields Main

The four clues that a chemical change has occurred are: Gas formation (bubbles) Energy change (heat or light) Color change Solid formation Main

New substances can only be formed by ______ __________. Chemical reactions Main

cannot be created or destroyed The law of conservation of mass states that ___________ ____________________________. Mass/matter/atoms cannot be created or destroyed Main

In a chemical equation, the number of atoms at the beginning of the reaction are _________ the number of atoms at the end of the equation. Equal to Main

Is this equation balanced or unbalanced? N2 + H2 NH3 Main

Why do we have to balance this equation? N2 + H2 NH3 There are less atoms in the products, so it looks like atoms were destroyed in the reaction (which is impossible.) Main

What is the balanced equation for this reaction? N2 + H2 NH3 Main

Lemon juice and vinegar are classified as ____________. Acids Main

Ammonia is classified as a __________. base Main

Acids have a pH of ________. Less than 7 Main

Pure water is a neutral substance that has pH of ________. Main

Acids usually contain this element. (Hydrogen) Main

Covalent compounds that are composed of carbon-based molecules are called _______. Organic Compounds Main

Why does Carbon form the backbone of organic compounds? Carbon can form up to 4 bonds. Main

Which of the following is a carbohydrate: sugar, enzymes, cooking oil, DNA? Main

In which group of organic compounds does DNA belong? Nucleic Acid Main

In which cell structure would you find an abundance of phospholipids? Cell membrane Main

Density is ______ per _______. Mass per volume Main

What is the density of an object that has a volume of 200 mL and a mass of 400g? 2 g/mL Main

A cereal box is 5cm by 4cm by 2cm A cereal box is 5cm by 4cm by 2cm. If its mass is 20 g, what is the density of the box? .5 g/cm3 Main

The amount of matter in a certain volume is __________. density Main

A liquid has a density of 2g/mL. If the mass is 50g, what is its volume? Main

A buoyant force on an object causes it to ____________. float Main

Which liquid is the least dense? LIQUID D LIQUID C LIQUID B LIQUID A Liquid D Main

Density of Bean = Density of Liquid C If a bean floats in Liquid C, what does that say about the bean’s density? LIQUID D LIQUID C LIQUID B LIQUID A Density of Bean = Density of Liquid C Main

If an object weighing 100N displaces a volume of water with a weight of 30N, what is the buoyant force on the object? 30N Main

Which of the following objects will sink in water. 1 g/mL Which of the following objects will sink in water? .1 g/mL .8 g/mL 2 g/mL .9 g/mL 2 g/mL Main