C3a What Are Atoms Like Question Foundation

C3a What Are Atoms Like Question Foundation Paper

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  • Created on: 03-05-12 07:19
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Item C3a: What are atoms like?
1. An atom has a n................ surrounded by e................ . The ................ go around the
................ in s................ . Nucleus is made of ................ and ................ . Label these In
the following diagram label these:
2. Protons are ................ charged, so nucleus will have ................ charge, (the nucleus has
only protons and neutrons, but neutrons have ................ charge) charged. A neutral atom will
have ................ number of electrons and protons.
3. Relative charge and relative mass of an electron, a proton and a neutron: Choose from the
following)
1 +1 1 0.0005 0 (zero) 1
Electron Proton Neutron
Charges ................ ................ ................
Relative Mass ................ ................ ................
4. Find the atomic number of oxygen by using a periodic table: ................
5. Write down the atomic number of iron: ................
6. Write down the symbol and the name of an element that has,
Atomic number 12: Name: ................ symbol: ................
Atomic number 78: Name: ................ symbol: ................
7. Atomic number is the number of ................ in an atom. (p)
8. Mass number is the total number of ................ and ................ in an atom. (p + n)
9. Isotopes as varieties of an element that have the same atomic number but different ................
numbers.
10. There are just over (100 / 150 / 200 / 50) elements.
11. An element as a substance which:
cannot be broken down ................
contains the same ................ of atom.
12. Which one of the following are elements. Circle them:
H2O-Water, Ag-Silver, H2-Hydrogen, Cu-Copper, CH4- Methane,
N2-Nitrogen, O2-Oxygen, CuO- Copper oxide,
Na2O-Sodium oxide,
Fe-Iron, S- Sulphur, HCl- Hydrogen chloride FeS- Iron sulphide.

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A c................ is a substance that contains at least two e................ chemically combined. (
joined)
14. Identify the elements in these compounds from its formula, using a periodic table. If possible
state how many atoms of each element is present one has been done for you:
Fe3O4 ­
CaSO4 ­
NaCl ­
Al2O3 ­
H2O ­ 2 x H atoms ( hydrogen) and 1 x O atom ( oxygen)
C2H6 ­
15. There are just over ................ elements, discovered so far on earth.
16.…read more

Comments

lisa linsdell

These questions are well thought out and cover the unit well. You can print it out or use online.  You need to download a separate document for the answers.

Keira_H

THIS IS PERFECT EVEN THOUGH I AM IN YEAR 7 I CAN USE THESE TO REVISE PERFECTLY

harrisonsanders

thanks very helpful

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