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Which of the following is not an element? 1. carbon 2. carbon dioxide

Which of the following is not an element? 1. carbon 2. carbon dioxide 3. nitrogen 4. phosphorus. A. Identify and describe the two parts of a solution. Solute – what is dissolved Solvent – What does the dissolving. B. A chemical formula like H 2 O represents

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Which of the following is not an element? 1. carbon 2. carbon dioxide

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  1. Which of the following is not an element? 1. carbon 2. carbon dioxide 3. nitrogen 4. phosphorus

  2. A Identify and describe the two parts of a solution. Solute – what is dissolved Solvent – What does the dissolving B

  3. A chemical formula like H2O represents an element 2. an atom    an electron  4. a compound

  4. A substance made up of two or more elements that have been chemically combined is a COMPOUND.

  5. A substance made up of two or more elements that have been physcially combined is a MIXTURE.

  6. 1. In lemonade, the lemonade mix is called the 1. solute. 2. solvent. 3. colloid. 4. solution. 2. In lemonade, the water is called the 1. solute. 2. solvent. 3. colloid. 4. solution.

  7. Which of the following would help sugar dissolve faster in water? stirring the water decreasing the solubility of sugar using larger particles of sugar decreasing the water temperature

  8. # of protons 35

  9. # of protons 48

  10. # of protons 12

  11. D Identify the sections of the periodic table. Noble gases B A C

  12. Elements at the left of the periodic table are known as METALS

  13. Elements at the right of the periodic table are known as NONMETALS

  14. They have the same (BUT NOT IDENTICAL) properties. What do we know about the elements in group (14)?

  15. Explain what occurs to the atomic number when moving from left to right on the periodic table. Atomic number increases.

  16. 1. Where are metals located? 2. Where are nonmetals located? 3. Where are metalloids located? 4. Where are noble gases located? To the left of the zigzag line To the right of the zigzag line Touching the zigzag line Group 18

  17. Which element is a noble gas? hydrogen oxygen neon nitrogen

  18. Identify the solid, liquid and gas! Support your answer. Liquid - Atoms are loosely packed Solid - Atoms are tightly packed Gas - Atoms are very loosely packed

  19. Identify the phase change described. 1. Solid to liquid: 2. Gas to liquid: 3. Liquid to solid: 4. Solid to gas: 5. Liquid to gas: 6. Solid to gas: melting condensation freezing sublimation vaporization deposition

  20. For each phase change describe whether energy is RELEASED or ABSORBED. 1. Melting: 2. Freezing: 3. Vaporization: 4. Sublimation: 5. Condensation: 6. Deposition: ABSORBED RELEASED ABSORBED ABSORBED RELEASED RELEASED

  21. The particles of a substance are closest together in a solid a liquid a gas plasma

  22. The particles of a substance move most readily in a solid a liquid a gas

  23. The particles of a substance that does not have a definite volume or shape is a solid 2. a liquid 3. a gas

  24. Attractive forces are very strong between particles in 1. a solid 2. a liquid 3. a gas 4. plasma

  25. When a liquid becomes a solid, energy does not change is released is absorbed is first absorbed, then released

  26. _______ is the process in which liquid changes to gas. 1. Sublimation2. Condensation 3. Evaporation4.Combustion

  27. The change of a liquid to a solid is called 1. freezing 2. melting 3. sublimation 4. vaporization

  28. When substances go directly from the solid phase to the gas phase, the phase change is called 1. sublimation 2. condensation 3. evaporation 4. vaporization

  29. For the following pictures, identify whether a physical or chemical change is occurring.

  30. Identify whether this is a physical or chemical change. Support your answer. Physical – No new substance was produced.

  31. Chemical – Carbon dioxide was produced.

  32. Chemical – ash and carbon dioxide were produced

  33. Physical – Nothing new was produced. The ice is melting.

  34. Physical – Nothing new was produced. The substance is being grinded into smaller particles.

  35. Chemical – Rust (iron oxide) was produced.

  36. Chemical – The Alka-Seltzer tablet released carbon dioxide into the water.

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