ANSWERS

1. Candle burning, nail rusting, and cake baking are all chemical reactions 2. The most abundant gas in our air is nitrogen ( molecular nitrogen (N2), 78% by volume, and molecular oxygen (O2), 21%. Small amounts of argon (Ar; 1.9%), neon (Ne), helium (He), methane (CH4), krypton (Kr), hydrogen (H2), nitrous oxide (N2O), and xenon (Xe) are also present in almost constant proportions. Other gases occur in variable concentrations: water vapour (H2O), ozone (O3), carbon dioxide (CO2), sulfur dioxide (SO2), and nitrogen dioxide (NO2). Air also contains trace amounts of ammonia and hydrogen sulfide.) 3. The primary colors of light are red, blue, green (yellow is a primary color of pigmentations) 4. Basic chemicals of the universe are called elements 5. The speed at which molecules move is dependant upon temperature 6. The diamond is the world's hardest natural substance 7. Out of atoms, quarks, molucules, and protons, quarks are the smallest 8. Out of atoms, quarks, molucules, and protons, molucules are the largest (quarks are in the make up of protons which are in the make up of atoms. It takes two atoms to have a molucule.) 9. Einstein said we can not move through time because we would have to travel faster than light 10. Newton invented an entirely new branch of mathmatics called Calculus 11. ROY G BIV = red, orange, yellow, green, blue, indigo, violet = colors of the rainbow 12. " We guarantee certainty, clearly referring to this light mnemonic" corresponds with the speed of light (the number of letters in each word is the speed of light in meters per second)(299,792,458) (the speed of light is constant only in a vacuum) 13. Hydrogen is the lightest of all gases and all elements.. 14. The periodic table is a list of chemical elements 15. The study of compounds containing carbon atoms is called organic chemistry 16. A BRIEF HISTORY OF TIME was written by Stephen Hawking 17. Quantum physics deals with particles on the scale of atoms 18. Quantum physics works for all four fundamental forces except gravity 19. A range of different wave lengths of electromagnetic radiation is called a spectrum (electromagnetic radiation is better known as light) 20. THE MATHEMATICAL PRINCIPLES of NATURAL PHILOSOPHY was written by Issac Newton 21. The American NIST-7 atomic clock is the most accurate clock on Earth (clocks in space are extremely mor accurate due to lack of gravitation) 22. Red is actually the longest light wave, The shortest being violet. 23. Different colors are in fact different temperatures. 24.Celcius and centigrade are interchangeable terms TRUE 25. Sound waves travel faster through solids than air TRUE (sound waves are carried by molecules. Molucules are closer together in solids than air) 26. All light comes from atoms TRUE 27. Everything moving has inertia FALSE (inertia is when in a state of rest or when moving at a steady speed in a straight line) 28. Sound frequency is measured in decibals FALSE 29. In space there is complete silence TRUE (there are no molucules in space) 30. Sound can have a reflection TRUE (called an echo) 31. Light travels slower in water TRUE

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ANSWERS

1. Candle burning, nail rusting, and cake baking are all chemical reactions 2. The most abundant gas in our air is nitrogen ( molecular nitrogen (N2), 78% by volume, and molecular oxygen (O2), 21%. ... Read more

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