Chemistry Self Assessment Test - 1896 Words

Self-assessment practice tests Test 1 – Material from Chapters 2–4 | 45 minutes 1 The kinetic theory suggests different arrangements for the atoms or molecules in the three states of matter. The diagrams below show how evidence suggests the particles are arranged in the three states of matter. 1 2 3 What are the three states shown? 1 A B C D 2 gas liquid solid liquid 2 liquid gas liquid solid 3 solid solid gas gas The graph shows the heating curve for a metal that is solid at room temperature (25  °C). The metal has been heated until it turns to vapour. D Temperature /  ºC C B A Time Which part of the graph represents the period of time when the metal is melting?  © Cambridge University Press IGCSE Chemistry Self-assessment practice†¦show more content†¦The table below shows the electronic structures of four elements. Which element is a noble gas? Element Number of electrons Shell 1 A B C D 2 2 2 1 Shell 2 0 2 6 0 18 The reactivity of elements within a group in the Periodic Table changes with their position in the group. What is the order of increasing reactivity of the elements in Group I and in Group VII? Group I A B C D Cs → Li Li → Cs Li → Cs Cs → Li Group VII F→I I→F F→I I→F  © Cambridge University Press IGCSE Chemistry Self-assessment practice test 1 6 19 The diagram shows an outline of the Periodic Table with certain elements marked. W V Y X Which of the elements V, W, X or Y is a metal and which is a non-metal? Non-metal A B C D Y Y W W Metal V X X V 20 Elements in the same group of the Periodic Table have similar properties. Element X is a colourless, unreactive gas. Which group of the Periodic Table is X in? A Group VI C Group 0 B Group I D Group VII 21 The structure of any atom is essentially defined by two numbers. How many protons, neutrons and electrons are present in an atom of the element with proton (atomic) number 6 and nucleon (mass) number 14? Protons A B C D 6 8 6 8 Neutrons 8 6 8 6 Electrons 6 6 8 8 22 Metals usually form compounds involving ionic bonding. How do metals form their ions? A by gaining protons C by losing electrons B by gaining electrons D by losing protons 23 Chlorine is a highly reactive non-metal. What particles are gained byShow MoreRelatedAcademic And Incentive Needs Of Science Teachers Essay1384 Words   |  6 PagesINCENTIVE NEEDS OF SCIENCE TEACHERS IN ONDO STATE, NIGERIA This study identified the perceived academic and incentive needs of Science Teachers and the significance of their experience on their needs using survey design. The instrument which was an assessment profile – Teachers’ Needs Questionnaire was used to collect data from Science Teachers in Ondo State, Nigeria. Introduction Science teaching in Nigeria has faced a lot of setbacks. 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