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Matter Unit Test Review ( 99 points)

Matter Unit Test Review ( 99 points). 1. What is matter ? (3 points) ANYTHING THAT HAS MASS AND TAKES UP SPACE 2. What is a phase change ? (3 points)  CHANGE FROM ONE STATE TO ANOTHER (EX: SOLID TO LIQUID)

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Matter Unit Test Review ( 99 points)

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  1. Matter Unit Test Review(99 points)

  2. 1. What is matter? (3 points) ANYTHING THAT HAS MASS AND TAKES UP SPACE 2. What is a phase change? (3 points)  CHANGE FROM ONE STATE TO ANOTHER (EX: SOLID TO LIQUID) 3. What are three examples of matter, one each of solid, liquid, and gas? (9 points)  PENCIL, WATER, CARBON DIOXIDE

  3. 4. What are three examples that are not matter? (6 points)  LIGHT, HEAT, SOUND 5. What is a physical property? (do NOT give an example) (3 points)  A CHARACTERISTIC OF A SUBSTANCE THAT CAN BE OBSERVED WITHOUT CHANGING THE IDENTITY OF THE SUBSTANCE

  4. 6. What is the definition of physical change AND 2 examples? (7 points)  A CHANGE IN A SUBSTANCE THAT DOES NOT CHANGE THE SUBSTANCE INTO A DIFFERENT ONE. EX: LIQUID WATER CHANGES TO WATER VAPOR, A WHOLE ONION CHOPPED INTO MANY PIECES

  5. 7. What is the definition of these physical properties: Density and Solubility? (6 points)  Density – MASS PER UNIT VOLUME Solubility - THE ABILITY TO DISSOLVE IN ANOTHER SUBSTANCE

  6. 8. What is the definition of chemical property? (3 points)  A CHARACTERISTIC OF A SUBSTANCE THAT DESCRIBES HOW IT CAN FORM A NEW SUBSTANCE

  7. 9. What is the definition of chemical change and 2 examples? (7 points)  A CHANGE OF ONE SUBSTANCE INTO ANOTHER SUBSTANCE. EX: CORROSION, TARNISH, RUST, FLAMMABILITY (COMBUSTIBILITY), SOLID FORMATION, BUBBLE FORMATION

  8. 10. What is the definition of these chemical properties: Combustibility (flammable) and Corrosion (corrosive)? (6 points) Combustibility – THE ABILITY TO BURN IN THE PRESENCE OF OXYGEN Corrosion - TO WEAR AWAY GRADUALLY, USUALLY BY CHEMICAL ACTION

  9. 11. What is the definition of atom? (3 points)  THE SMALLEST PARTICLE OF AN ELEMENT THAT HAS THE CHEMICAL PROPERTIES OF THAT ELEMENT 12. On the periodic table of the elements, the atomic number is equal to the number of____________. (2 points)  PROTONS

  10. 13. On the periodic table of the elements, the number of ___________ (answer to #12) is equal to the number of _________________ (4 points)  PROTONS ELECTRONS

  11. 14. Atomic structure Name the three parts of atom. (6 points) PROTON, NEUTRON, ELECTRON

  12. 14. Where is each part located? (6 points) PROTON AND NEUTRON: IN THE NUCLEUS IN THE CENTER OF THE ATOM ELECTRON: IN A CLOUD SURROUNDING THE NUCLEUS Where is the greatest amount of mass located in the atom? (1 point) IN THE NUCLEUS

  13. 15. On the Periodic Table of the Elements, how do you find the number of protons, electrons, and neutrons for any element? (5 points) PROTONS and ELECTRONS = Atomic Number NEUTRONS = Atomic mass – Atomic number

  14. 16. What is an element (do NOT give an example)? (3 points) A SUBSTANCE THAT CANNOT BE BROKEN DOWN INTO A SIMPLER SUBSTNACE BY ORDINARY CHEMICAL CHANGES. AN ELEMENT CONSISTS OF ATOMS OF ONLY ONE TYPE

  15. 17. What is the substance called that is formed when two or more elements are bonded together? (3 points)  COMPOUND 18. What is a chemical formula? (3 points)  A WAY OF DESCRIBING THE NUMBER OF ATOMS THAT MAKE UP ONE MOLECULE OF A COMPOUND

  16. 19. Write an example of a chemical formula (NOT CO2). (2 points)  VARIOUS ANSWERS, EX: H20, CO, H2, O2, N2, NaCl

  17. 20. Use the chemical formula CO2 to answer the following: What are the two elements in this formula? (8 points) CARBON and OXYGEN How many atoms of each element are there? (name the element with your answer – for example 5 atoms of neon) 1 ATOM OF CARBON 2 ATOMS OF OXYGEN

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