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Flashcards

Exam Revision 2018

Sadie Wykes Chemistry Year 9 English 112 cards

What is the radioactive decay symbol for Gamma Decay?

Cards in this deck (112)

  1. 1How many groups are there in the periodic table?18
  2. 2What is chemistry?Chemistry is the study of how atoms arrange themselves and rearrange themselves in various ways.
  3. 3What does neutrally charged mean?Neutrally charged means that it has the same amount of protons and electrons.
  4. 4What is an element?The term element refers to the type of atoms they are, if there is only one type of symbol it is an element.
  5. 5What is a pure element?A pure element means that all the elements present are of the same type.
  6. 6What is a molecule?When atoms bond together in small clusters, they can be made of different or similar atoms.
  7. 7How is a molecule formed?A molecule is formed when two or more atoms join together chemically.
  8. 8What is a mixture?Mixtures are formed when different compounds or elements are put together without bonding.
  9. 9What is a compound?When atoms of at least 2 different elements are bonded together.
  10. 10What is an ion?An atom that is electrically charged.
    The number of protons and electrons is different.
  11. 11What is an ionic compound?An ionic compound is 2 elements that are bound together and they're charged.
  12. 12What is an isotope?Isotopes are created when the number of neutrons is different in each version of the element.
  13. 13What is a neutron?Not positive or negative
  14. 14What is an electron?Have negative and on outer shell
  15. 15What is a proton?Have a positive mark and in the nucleus.
  16. 16What is an electron shell?Have electrons on them.
    As each shell gets further from the nucleus, its energy level increases and the shell gets larger (and is able to hold more electrons).
  17. 17What are the different electron shell layers?The 1st shell (inner shell) can only hold a maximum of 2 electrons. The 2nd shell can hold up to 8 electrons until it is full.
    The 3rd shell can actually hold 18 electrons but it only fills up 8 electrons before the next shell starts filling.
  18. 18What is the outer shell on an electron called?A valence
  19. 19What is a nucleus?The tiny but heavy centre of the atom is called the nucleus. It contains two types of particles: neutron and protons.
  20. 20How do you work out the number of neutrons?number of neutrons = (mass number - number of protons)
  21. 21How do you work out the number of electrons?the number of electrons = the number of proton
  22. 22How do you work out the number of uncharged atoms?For uncharged atoms, the number of electrons must equal the number of protons.
  23. 23What is the electron configuration?A listing of the number of electrons in each shell is called the electron configuration.
  24. 24What happens as electrons gain more energy?They orbit further from the nucleus.
  25. 25How much energy is emitted if there is a red light?If red light is emitted, a small amount of energy has been released (long wavelength), so the electrons are jumping a small way.
  26. 26How much energy is emitted if there is a purple light?If purple light is emitted, a large amount of energy is released (short wavelength), so the electrons are jumping a long way.
  27. 27_____ and ____ attract each other?Positives and negatives attract each other.
  28. 28What are lattices?They are atoms stacked in alternating arrangements.
  29. 29How many periods are there in the periodic table?7
  30. 30How many elements are there in the periodic table?109
  31. 31What is a molecule of an elementWhen the same type of atoms bond together to form chemical bonds.
  32. 32What is a Molecule of a compound?When atoms of at least 2 different elements bond together to form chemical bonds.
  33. 33How do you Calculate a half-life?Double the amount of time and divide the counts by two.
  34. 34What is a half life?The rate of the decay of a material.
  35. 35What is a radionuclide?A radioactive isotope is called radionuclide.
  36. 36What are the Strength of the 3 Types of Decay?Alpha Decay, Beta Decay and Gamma Decay
  37. 37What is the strength of Alpha Decay?An alpha particle is produced, this is the same as the helium nucleus.
  38. 38What is the strength of Beta Decay?During beta decay a neutron is turned into a proton and beta particle (an electron) leaves the nucleus.
  39. 39What is the strength of Gamma Decay?It is a form or electromagnetic radiation. Gamma rays have the most energy and therefore cause the most damage.
  40. 40What is the radioactive decay symbol for Alpha Decay?What is the radioactive decay symbol for Alpha Decay?
  41. 41What is the radioactive decay symbol for Betta Decay?What is the radioactive decay symbol for Betta Decay?
  42. 42What is the radioactive decay symbol for Gamma Decay?What is the radioactive decay symbol for Gamma Decay?
  43. 43How is radiation used in medicine?Radiation is widely used in the diagnosis of certain diseases through x-rays.
  44. 44What are Strontium and samarium isotopes?Strontium and samarium isotopes are used to relieve the pain caused by bone cancers.
  45. 45What are the features of a chemical reaction?Changes of a chemical reaction are change of colour, change of temperature and gas.
  46. 46What are the symbols of state?S= Solid
    G= Gas
    L= Liquid
    AQ= Aqueous
  47. 47What is Exothermic?The extra energy can be released as heat energy this is an exothermic reaction and it is more stable.
  48. 48What is Endothermic?Endothermic is less stable and the atoms need to gain energy from the new arrangement.
  49. 49What are balancing equations?To balance equations you have to add coefficients as required and if it's a one leave it blank.
  50. 50What are radioisotopes?Radioisotopes are man made, they're made by combing protons and neutrons and are unstable.
  51. 51Concerning Radioactive Isotopes, how do you find out the number of electrons?It is still the atomic number and has not changed.
  52. 52Concerning Radioactive Isotopes, how do you find out the number of neutrons and protons?The mass number - atomic number
    Example;
    Nitrogen = 16, so the no. of neutrons is 16 - 7.
  53. 53What is static Electricity?Static electricity is the result of an imbalance of charge in materials.
  54. 54What is an insulator?Glass
  55. 55What is a conductor?Metal and saltwater.
  56. 56When is static build-up most likely to occur?The static build up is most likely to occur when one of the materials involved is an insulator.
  57. 57What is Kinetic Energy?The energy associated with MOVING OBJECTS.
  58. 58What is Gravitational energy?The energy stored due to an object's position being ABOVE THE GROUND.
  59. 59What is elastic Energy?The energy stored by a spring or spring-like object that has been squashed or stretched from its normal state.
  60. 60What is thermal energy?The energy associated with temperature.
  61. 61What is electrical Energy?The energy associated with charges.
  62. 62What is chemical energy?The energy stored in the bonds holding the atoms in chemical structures together which is released during certain chemical reactions.
  63. 63What is nuclear energy?The energy stored in the nuclei of atoms which can be released during certain nuclear reactions.
  64. 64What is rotational energy?The energy carried by a ROTATING OBJECT.
  65. 65What is sound energy?The energy carried by sound waves (which are created by vibrating sources).
  66. 66What is light energy?The energy carried by light waves .
  67. 67What is the joule?How much energy there is. By using 'the joule', we allow ourselves to keep track of energy in a quantitative way.
  68. 68How many joules in a kilojoule?1 kJ = 1000 joules
  69. 69How many joules are in a megajoule?1 million J
  70. 70How many joules are in a gigajoule?1 billion J
  71. 71What is the law of conservation of Energy?You can't create any new energy and you can't destroy any of the pre-existing energy. If some object loses energy somewhere in the universe, then some other object (or other places) must have gained energy.
  72. 72What is an energy transfer?The energy is transferred to another object or space.
  73. 73What is energy transformations?This is when one form of energy changes to another.
  74. 74Sign of CurrentMeasured in amps, and amps measured by coulomb per second.
  75. 75ResistanceSomething that opposes or restricts current flow in a circuit. It slows down the flow of electrons.
  76. 76What is Direct Current?The continuous movement of electrons from negative to positive.
  77. 77Kirchoffs Junction RuleThe sum of currents entering a junction (or node) equals the sum of currents leaving the junction.
  78. 78Kirchoff's Loop RuleThe sum of all voltages around a loop equals zero.
  79. 79What is alternating current?A flow of electric charge that regularly reverses its direction.
  80. 80Parallel CircuitWhen they have a choice to go through what resistore they want.
  81. 81Series CircuitIt has no option, it has to go through each resistor.
    It is on the same circuit.
  82. 82Sum of Resistance in CircuitR = V/I
  83. 83Why does current flow negative to positive?Electrons are attracted to the positive terminal, causing the electrons to push away from the negative terminal.
  84. 84CurrentA flow of charges in a circuit.
  85. 85Closed CircuitWhen the 2 ends meet.
  86. 86Electrical CircuitA closed loop that carries electricity.
  87. 87Sum of Current in circuitI = V/R
  88. 88What does AC stand for?Alternating Current
  89. 89ResistorAn electrical device that resists the flow of electrical current
  90. 90VoltmeterA device used to measure voltage (volts). It is parallel with a circuit.
  91. 91Sum of Voltage in CircuitV=IR
  92. 92Sign of ResistanceOhms ( ᘯ )
  93. 93VoltageThe 'push' or energy given to the charges that cause the current to flow. (It is the potential to do work.)
  94. 94LoadElectrical component of a circuit that consumes power.
  95. 95AmmeterA device used to measure current (amps). It is in series with a circuit.
  96. 96Sign Of VoltageV - volts
  97. 97What does DC stand for?Direct current
  98. 98Open CircuitWhen the 2 ends don't meet.
  99. 99What does KVL stand for?Kirchoff's Voltage Law
  100. 100Sign of Electric PowerW - Watts
  101. 101Electric PowerThe rate, per unit time, at which electrical energy is transferred by a circuit.
  102. 102Light bulbA type of resistor (you cant measure the ohms)
  103. 103SwitchA device that temporarily restricts the flow of current in a circuit.
  104. 104Why are noble gases already stable?They have a full outer shell
  105. 105An example of noble gas.Helium
  106. 106When an atom has a negative charge, the number of electrons is:Greater then the number of protons.
  107. 107When metal compounds were heated over a Bunsen Burner flame, bright colours were seen. This was caused by:Electrons jumping down from higher energy electron shells,giving off energy as light.
  108. 108An isotope could be formed if:An atom loses a neutron.
  109. 109What name would be given to a charged atom of sodium?sodium ion.
  110. 110O2compound
  111. 111Mgelement
  112. 112Carbon - 15 has:A mass number of 15 and 3 more neutrons then usual.

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Year 9 Chemistry Flashcards on Exam Revision 2018, created by Sadie Wykes on 27/11/2018.
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Sadie Wykes
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  • Created by Lucy Crowe · Aug 6, 2018
  • Copied by Sadie Wykes · Nov 27, 2018
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