Education Ltd 2012 INTERNATIONAL GCSE CHEMISTY PAPER 1C – SUMMER 2012 Question number 1 (a) Expected Answer measuring cylinder B Accept Reject Marks 6 C Ignore D Or 2D diagram (top pan) balance /scale(s) / weighing machine A or E Ignore extra apparatus on top of tripod eg beaker Minimum is 2 vertical or diagonal lines with something on top 1 mark for each correct answer Question number 1 (b) Expected Answer M1 wear (safety)
Premium Atom Chlorine Atomic number
Reminders: 1. In a neutral atom the number of protons equals the number of electrons. 2. An atom can NEVER gain or lose protons 3. The number of protons equals the atomic number NAME:________________________________________ Ion Practice Set 1. What is an ion? 2. What does the number next to the ions signify? Complete the following table‚ using the periodic table in the back of your book. ELEMENT NAME ION SYMBOL NUMBER OF PROTONS NUMBER OF ELECTRONS NUMBER OF ELECTRONS LOST OR GAINED ex
Premium Atom Atomic number Chemical element
Romans but they rarely used it. When it was first used it was recognized. Zinc has a specification of metal made from ore or another material a process of distillation by electrolysis. The atomic number for zinc is 30. The mass number is 65.39 mass units. The number of isotopes it has is 64. The period number is 4 and the family name it is in is the transition metal. The other family members are Cadmium and Mercury. Zinc is a metal that is a solid at room temperature. Zincs melting point temperature
Premium Chemical element Atom Chemistry
FORMAL LAB REPORT INTRODUCTION John Dalton’s atomic theory states that elements combine in simple numerical ratios to form compounds. A compound‚ no matter how it is formed‚ always contains the same elements in the same proportion by weight. The law of mass conservation states that mass can neither be created nor destroyed. In this experiment‚ the mass of the metal was not destroyed or created; the metal’s mass was simply changed into a compound form once the gas
Premium Chemistry Chemical element Atom
Argon Argon was originally named after the Greek word “Argos‚” meaning inactive. Argon’s chemical symbol was just A before it was changed to Ar in 1957. It has an atomic number of 18‚ and is in Period 3‚ Group 18. Argon contains 18 protons and 18 electrons with 22 neutrons. It has an atomic mass of 39.948. Suspected to be present in the atmosphere in 1785 by Henry Cavendish‚ Argon wasn’t actually discovered until 1894 by William Ramsay‚ a Scottish chemist‚ and Lord Rayleigh
Premium Periodic table Chemical element Helium
people are very shy individuals and tend to live solitary lives on different atoms. They tend to share characteristics with the atom that they are living on with each aspect of the atom reflected in a characteristic of the people. For example‚ the number of arms they possess might mean something. Your job is to determine what person is missing in your packet. Remember that all of these people are unique‚ but they have families and many characteristics that are similar. Also‚ because of their close
Premium Electron configuration Atom Atomic number
I was assigned was the element Manganese. The symbol for manganese is Mn. It is number 25 on the periodic table. That means it has 25 protons and electrons even on mars or anywhere you go it will have the same protons and electrons. The atomic number would also be 25. It has 30 neutrons also in in the nucleus. The melting point for Manganese would be 1519 K (1246°C or 2275°F). The boiling point would be 1519 K (1246°C or 2275°F) according to http://education.jlab.org/. It also could be 1245.0 °C
Premium Chemical element Manganese Atomic number
often used for the production of medical As and Se radioisotopes. Ge-74 is used in the production for As-74‚ Ge-76 is used for the production of As-77‚ Ge-74 for the production of As-73 and Ge-72 for As-72 (Germanium Element). The atomic number for germanium is 32. It’s atomic mass is 72.59 g. Mol -1. The electronegativity for germanium is 1.8. The density of germanium is 5.3 g.cm-3 at 20o Celsius. Germanium also has a melting point of 937o Celsius. Its boiling point is 2830o Celsius
Premium Chemical element Periodic table Chemistry
COMPUTER AIDED INSTRUCTIONS FOR HIGH SCHOOL CHEMISTRY OF STA. LUCIA HIGH SCHOOL A Thesis Project Presented to the Faculty of STI Colleges Ortigas-Cainta In Partial Fulfillment of the Requirements in the Degree of Bachelor of Science in Computer Science by Amoranto‚ Camille R. Angala‚ Wilfred B. Espinosa‚ Kenzo Maverick C. Vargas‚ Jessica T. Mr. Inell Ray D. Corpin Thesis Adviser October 14‚ 2012 ADVISER’S RECOMMENDATION SHEET This Thesis entitled Computer Aided Instructions for High School
Premium Chemistry Periodic table Atomic number
My Ambition of Life Aimless life is no lesser than a blunder out . M either quite a little soak up no definite grow in life. They atomic number 18 like travellers going ahead without any destination. Someone has truly say that Changes do not die when circumstances improve it happens when we limit to diversity to ourselves .Such people who lead an aimless life do not imagine in hard work but‚ always depend on destiny. It is true that God has written our destiny but it is we who arrive at to achieve
Premium 2000 albums Life 2009 singles