2. Please select a Team. 0 30 1. Team 1 2. Team 2 3. Team 3 4. Team 4 5. Team 5 6. Team 6 7. Team 7 8. Team8

3. NaOH + MgCl2  NaCl + MgOH (4grams) (1gram) ( ?grams) (2grams) What is the mass of NaCl? 0 30 1. 5grams 2. 3grams. 3. 4grams 4. 7grams

4. A galaxy is best described as a cluster of 1. hundreds of stars. 2. thousands of stars. 3. millions of stars. 4. billions of stars. 0 30

5. To express the distance between the Milky Way galaxy and other galaxies, the most appropriate unit of measurement is the 1. meter. 2. kilometer. 3. light-year. 4. astronomical unit. 0 30

6. Team Scores 3Team 5 3Team 6 3Team 2 2.5Team 1 2.5Team 3 2.33Team 4 2.17Team 7

7. Which equation shows that the total mass during a chemical reaction stays the same? 1. 1 2. 2 3. 3 4. 4 0 30

8. If a sun is releasing red light it’s considered… 1. Hot 2. Cooler 0 30

9. Which of the following forms of energy is released or absorbed in most chemical reactions? 1. light energy 2. Electrical energy 3. sound energy 4. heat energy

10. NaOH + MgCl2  NaCl + MgOH (4grams) (1gram) ( ?grams) (2grams) The properties of NaCl + MgOH are… 0 30 1. The same as NaOH + MgCl2 2. Different than NaOH + MgCl2

11. The table below shows the pH and reaction to litmus of four body fluids. These data indicate that gastric juice is 1. very acidic. 2. very basic. 3. positively charged. 4. negatively charged.

12. Team Scores 7Team 5 6.5Team 3 6.5Team 6 6.33Team 2 6.17Team 7 5.5Team 1 5Team 4

13. Which of the following sets contains only objects that shine as a result of reflected light? 1. moons, planets, and comets 2. moons, comets, and stars 3. planets, stars, and comets 4. planets, stars, and moons 0 30

14. (Std. 6a) What types of bonds can carbon form? 1. single bonds 2. double bonds 3. single or double bonds 4. single, double, or triple bonds

15. (Std.6b) Which of the following lists the six main elements that make up most living organisms? 1. Silicon, helium, hydrogen, oxygen, carbon, neon 2. Carbon, phosphorous, sulfur, hydrogen, oxygen, nitrogen 3. Hydrogen, oxygen, nitrogen, silicon, potassium, fluorine 4. Carbon, nitrogen, oxygen, iron, sodium, magnesium

16. NaOH + MgCl2  NaCl + MgOH + ENERGY RELEASED What type of reaction is this? 1. Synthesis 2. Endothermic 3. Exothermic

17. (Std. 6c) Which of these is among the small molecules found in living organisms? 1. Salt 2. DNA 3. Protein 4. Fat

18. (Std. 3b) Two solids and two liquids are mixed together, and a chemical reaction occurs. Which of these statements must be true? 1. At least one solid product will form from this reaction. 2. The two solids will form a new solid, and the two liquids will form a new liquid. 3. None of the products will have any atoms of the reactants. 4. The final result will have the same number and types of atoms as the reactants.

19. (Std. 3c) Which of these is a definition of a polymer? 1. A single element made atoms. 2. Two or more atoms joining together. 3. One kind of crystal. 4. A long chain of molecules made up by a repeating pattern of smaller molecules.

20. Team Scores 11.25Team 6 11Team 5 11Team 3 9.33Team 2 8.67Team 7 8.33Team 4 8Team 1

21. When a chemical change occurs, the products have.. 1. Properties similar to the reactants 2. Properties different than the reactants 3. Properties completely identical to the reactants

22. A pH of 12-14 is a 1. Weak acid 2. Strong acid 3. Weak base 4. Strong base 5. neutral

23. What process occurs in our sun releasing mass amount of energy 1. Nuclear fission 2. Nuclear fusion 3. Gasoline explosions 4. Solar flares

24. When there is a NEW MOON… 1. The Moon is between the Earth and the Sun 2. The Earth is between the Moon and the Sun

25. The moon is visible because it 1. Has nuclear fusion 2. Glows 3. Reflects sunlight

26. Team Scores 16Team 4 15.75Team 2 15.75Team8 15Team 5 13Team 1 13Team 6 12.75Team 3 12Team 7