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Atoms and Metals Quiz
Fichas del conjunto (46)
- 1Name the 3 sub atomic particlesPROTONS, NEUTRONS AND ELECTRONS
- 22. Which 2 are in the nucleus?PROTONS AND NEUTRONS
- 33. Which 2 are charged?(PROTONS AND ELECTRONS)
- 44. Where are the electrons?(IN SHELLS/ENERGY LEVELS ORBITING THE NUCLEUS)
- 55. What number on the periodic table tells you the number of protons?ATOMIC/PROTON NUMBER
- 66. What sum do you do to find the number of neutrons in an atom?MASS NUMBER- ATOMIC NUMBER
- 77. What is the symbol of limestone and what is it made of?CaC03
(calcium carbonate) - 88. Formula when limestone thermally decomposes?CaCO3 -> CaO + CO2
(calcium oxide + carbon dioxide) - 99. Formula when limestone reacts with sulphuric acid?CaCO3 + H2SO4 -> CaSO4 + CO2 + H2O (calcium sulphate + carbon dioxide + water)
- 1010. Formula when calcium oxide reacts with water?CaO + H2O -> Ca(OH)2
(calcium hydroxide) - 1111. What happens when calcium hydroxide reacts with C02?Calcium carbonate is produced
- 1212. What can limestone be used to make?Cement - powdered limestone + powdered clay
Concrete - sand + aggregate - 1313. Disadvantage of quarrying?1. Ugly holes made
2. Processes like blowing up rock - noise and dust pollution
3. Destroys habitats
4. Transport from lorries - noise pollution
5. Waste materials make unsightly tips - 1414. Disadvantages of making stuff from limestone1. Cement factories - dust pollution causes breathing problems
2. Energy needed to produce cement and quicklime from fossil fuels - 1515. Uses and plus sides of limestones1. Provides housing and roads
2. In dyes, paints and medicines
3. Can be used to neutralise acidic soil
4. Can neutralise sulphur dioxide
5. Provides jobs
6. Land is restored after quarrying - 16Advantages of limestone1. Widely available and cheap
2. Looks attractive
3. Can be poured into moulds for concrete
4. Doesn't rot like wood
5. Can't be gnawed by insects
6. Doesn't corrode like other metals - 17What non metal element is used to displace a metal?CARBON
- 18Must the metal be more or less reactive than carbon?LESS
- 19What is an ore?ROCK CONTAINING ENOUGH METAL TO MAKE IT ECONOMICAL TO EXTRACT
- 20How do we extract metals which are more reactive than carbon?ELECTROLYSIS
- 21What are the 4 ions present when sodium chloride is electrolysed?Na+ Cl- H+ OH-
- 22Why does H+ go to the electrode instead of Na+?HYDROGEN IS LESS REACTIVE
- 23Why are alloys stronger than pure metals?THE LAYERS CANNOT SLIDE OVER EACHOTHER
- 24What is meant by native state?WHEN UNREACTIVE ELEMENTS ARE FOUND AS THE METAL ITSELF
- 25What is produced when iron oxide is displaced in the blast furnace?CARBON DIOXIDE + IRON
- 26Why are metals extracted my electrolysis so expensive?THE PROCESS USES LARGE AMOUNTS OF ENERGY
- 27As copper-rich ores are running out, we need to extract from low grade ores. Give two ways we do this?BIO-LEACHING AND PHYTOMINING
- 28Give two reasons we should recycle metalsEXTRACTION USES ENERGY, EXTRACTION USES LIMITED RESOUCRES, EXTRACTION DAMAGES THE ENVIRONMENT
- 29What is wrong with iron from the blast furnace?CONTAINS IMPURITIES WHIC MAKE IT BRITTLE
- 30What is an alloy?MIXTURE OF ELEMENTS WHERE AT LEAST ONE IS A METAL
- 31Why are most metals alloys?PURE METALS ARE TOO SOFT
- 32What are the metals between groups 2 and 3 in the periodic table called?TRANSITION ELEMENTS
- 33Why are aluminium and titanium so usefulTHEY HAVE LOW DENSITY AND ARE RESISTANT TO CORROSION
- 34What does phytomining use to extract metals?PLANTS
- 35What are the stages of phytominingPLANTS ABSORB COPPER. PLANTS ARE THEN BURNED TO PRODUCE ASH CONTAINING THE COPPER COMPOUND. THE COPPER IS THEN EXTRACTED
- 36What are the stages of bio-leaching?BACTERIA USES ENERGY FROM BONDS IN THE COMPOUND TO SEPARATE FROM THE ORE. LEACHATES HAVE COPPER WHICH CAN BE EXTRACTED
- 37What is produced when carbonates react with acid?CO2, SALT AND WATER
- 38What is smelting?When the ore is heated in a furnace
- 39Why is more copper being extracted from ores with low percentage of copper compounds?- It is more economical to do so
- Copper ores are running out
- There are not many high grade ores available - 40Why is the overall charge of an atom neutral?Amount of electrons = amount of protons
- 41Why are some elements in the same group?They have the same number of electrons in the outer shell
Similar properties - 42Why are noble gases in Group 0 unreactive?They have a stable arrangement of electrons
- 43Why is scrap iron used to displace copper?It is more reactive
Cheaper alternative - 44Feature of low carbon steel?Easily shaped
- 45Feature of high carbon steel?Are hard
- 46Feature of stainless steelResistant to corrosion
Información
- Descripción
- Some questions on C1 for revision
- Creado por
- Dale George
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