1. Atomic Structure / Periodic TableN4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
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2. Elements are arranged in terms of their chemical properties
How are elements arranged in the Periodic Table? 1.
answer
Elements are arranged in terms of their chemical properties
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3. Calderglen High School
What is similar about elements in the same group (column) of the periodic table? 2.
answer
Elements in the same group show similar chemical properties
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4. What are the NOBLE GASES?3.
answer
The very unreactive Group 0 elements.
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5. What is the name given to the centre of an atom?4.
What is the name given to the centre of an atom?
answer
The NUCLEUS
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6. Describe the structure of an atom?5.
answer
An atom is a very small particle with a positively charged centre (nucleus) surrounded by moving negatively charged electrons
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7. Calderglen High School
What is a nucleus? 6.
answer
The very small positively charged centre of atom.
It contains protons and neutrons.
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8. What charge has the centre of an atom?7.
answer
Positive charge
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9. Where are the electrons found in an atom?8.
answer
Outside the nucleus
(in energy levels)
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10. Calderglen High School9.
What is ATOMIC NUMBER?
answer
The number of protons in an atom.
It is the number by which elements are arranged in the Periodic Table
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11. Why are atoms electrically neutral?
10.
answer
The number of positively charged protons equals the number of negatively charged electrons
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12. What information does the group number give?
11.
answer
The group number = the number of electrons
in the outer energy level
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13. What is the mass and charge of a proton?
12.
answer
Mass Charge
Proton amu
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14. What is the mass and charge of a electron?
13.
answer
Mass Charge
Electron almost
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15. What is the mass and charge of a neutron?
14.
answer
Mass Charge
Neutron 1 amu
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16. Calderglen High School
What is the same about the electron arrangement of atoms in the same group?
15.
answer
They have the same number of electrons in their outer energy levels.
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17. Calderglen High School
What is the connection between the electron arrangement and the chemical properties of an element?
16.
answer
Elements with the same number of outer electrons have similar chemical properties
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18. What is the MASS NUMBER of an atom?
17.
answer
No of Protons +
No of Neutrons
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19. Calderglen High School
What is an ION?
18.
answer
A charged particle formed when electrons are gained or lost by an atom
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20. How is a positive ion formed?
19.
answer
An atom loses an outer electron(s)
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21. How is a negative ion formed?
20.
answer
An atom gains an outer electron(s)
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22. A group of non-metal atoms joined together by covalent bonds.
What is a MOLECULE?
21.
answer
A group of non-metal atoms joined together by covalent bonds.
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23. Calderglen High School
What is a diatomic?
22.
answer
A molecule containing two atoms.
e.g. H2, HCl.
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24. Which elements exist as diatomic molecules?
23.
answer
Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, Iodine.
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