1. 6.5ABC Elements and Compounds-Answers Lab Journal Pages 1-2

2. 6.5ABC Elements and Compounds-Answers Lab Activity: Matter Part I-Explore Lab Journal p. 1-2 Directions: You are to view this PowerPoint and correct in red ink, any questions you had wrong. If your answers are correct, give yourself a smiley face or check plus mark. You may write the correct answer in the margins or above the question. Do not erase your old answer. If there isn’t enough room, you may write corrected answers on a separate sheet of paper and then staple into your journal.

3. Answers: 1. You may have a variety of answers such as Carbon C Neon NeSilver Ag (if it is a two letter symbol, the first letter must be upper case and the second letter must be lower case. Check for this) 2. The symbol for copper is Cu (upper case/lower case) 3. The symbol for Krypton is Kr (upper case/lower case)

4. 4. The element that has the symbol He is Helium 5. The element that has the symbol Ca is Calcium.

5. Aluminum-Al-Lithosphere Argon-Ar-Atmosphere Calcium-Ca-Lithosphere, Biosphere, Hydrosphere Carbon-C-Atmosphere, Biosphere, Hydrosphere Chlorine-Cl-Biosphere, Hydrosphere Fluorine-F-Hydrosphere

6. HYDROGEN-H-Lithosphere, Atmosphere, Biosphere, Hydrosphere Iodine-I-Biosphere Iron-Fe-Lithosphere, Biosphere Magnesium-Mg-Lithosphere, Biosphere, Hydrosphere Nitrogen-N-Atmosphere, Biosphere OXYGEN-O-Lithosphere, Atmosphere, Biosphere, Hydrosphere

7. Phosphorus-P-Biosphere Potassium-K-Lithosphere, Biosphere, Hydrosphere Silicon-Si-Lithosphere, Hydrosphere Sodium-Na-Lithosphere, Biosphere, Hydrosphere Sulfur-S-Biosphere, Hydrosphere Zinc-Zn-Biosphere

8. 6. A pure substance is matter that is made of only one kind of matter, is uniform throughout, and has consistent properties 7. An element is a pure substance that is made of only one type of atom that cannot be broken down into a simpler substance. 8. Elements are identified on the periodic table by a symbol and name (also atomic number and atomic mass)

9. 9. One or two letters are used to identify and element. If it is one letter, the letter is a capital letter. If two letters, the first letter is capitalized, the second letter is lower case. 10 There are only TWO elements which are found in all components of the Earth. They are Hydrogen and Oxygen **Of all the 117 + know elements only a very few make up all known matter in significant quantities on the Earth.