Complete 3 lines 1. 2. 3. 4. 5. Anything that has mass and occupies space is ______ What particles make up the nucleus of an atom? Atoms that lose electrons are called_______ List two properties of halogens? Write down the name and symbol of first 10 elements in periodic table. 6. 7. 8. 9. 10. Give the symbol for two halogens How many atoms What is the are there in total proton number in a molecule of of mercury? sucrose, C12 H22 O11? A very reactive metal with properties similar to sodium and in the same period as bromine. What is the name of element in period 4, group 17? 11. 12. 13. 14. 15. What period are the following elements in? What is the charge of a nucleus of an atom? Draw the atomic structure of an oxygen atom The most abundant metal element in the earth’s crust 3 major elements needed by plants for healthy growth. 16. 17. 18. 19. 20. List two properties of alkali metal? Give chemical name of an element which is chemically unreactive. List three substances that made up of molecules. I am colourless and odourless gas that makes up most of the air you breathe but I am not oxygen. Which element am I? Explain why atom is neutral 21. 22. 23. 24. 25. I am very light and non toxic gas. I do not react with other substances so I am often used to make party balloons. Which element am I? In Periodic Table of Elements, elements are arranged according to their__________ Which group of elements are the most reactive non-metals? Name two ions that make up sodium chloride(sea salt) Fe I Ca Write down two information that can be obtained from the diagram above.