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  2. What are the relative masses of protons, neutrons and electrons?

    www.mytutor.co.uk/answers/21057/GCSE/Chemistry/What-are...

    The relative mass of a proton is 1. The relative mass of a neutron is 1. The relative mass of an electron is 1/1840 (accept 0).

  3. State the relative charge and relative mass of a proton, of a...

    www.mytutor.co.uk/answers/42570/A-Level/Chemistry/State-the...

    State the relative charge and relative mass of a proton, of a neutron and of an electron. In terms of particles, explain the relationship between two isotopes of the same element. Explain why these isotopes have identical chemical properties.

  4. Describe an atom in terms of its sub-atomic particles and ... -...

    www.mytutor.co.uk/answers/21085/GCSE/Chemistry/Describe-an...

    A proton has a relative mass of 1, a relative charge of +1 and is located in the nucleus. A neutron has a relative mass of 1, a relative charge of 0 and is located in the nucleus. An electron has a relative mass of 1/2000, a relative charge of -1 and is located in shells surrounding the nucleus

  5. What are the relative charges of the proton, neutron and electron...

    www.mytutor.co.uk/answers/51166/GCSE/Chemistry/What-are...

    What are the relative charges of the proton, neutron and electron? The proton's relative charge is +1 The neutron's relative charge is 0 The electron's relative charge is -1. Answered by Alexander E. • Chemistry tutor.

  6. How do you calculate the relative formula mass of a compound?

    www.mytutor.co.uk/answers/366/GCSE/Chemistry/How-do-you...

    The relative atomic masses of these elements are: H=1; C=12; O=16; Na=23. (Note: These will be on the periodic table you are given, I have just put them here for ease) Work out the relative formula mass of NaHCO3. You have: So the calculation is... (1 23)+ (1 1)+ (1 12)+ (3 16) = 84g/mol. The relative formula mass of a compound is simple to ...

  7. Explain what happens to magnesium and oxygen atoms when they ......

    www.mytutor.co.uk/answers/5968/GCSE/Chemistry/Explain-what...

    Magnesium is a group II metal, and therefore has two electrons in it's highest energy level (or outermost electron shell). When the reaction with oxygen occurs, these two electrons are donated by the magnesium, forming positively charged Mg 2+ ions. The two electrons donated from one magnesium atom are taken up by an oxygen atom.

  8. What is the difference between 'Electrospray Ionisation' and...

    www.mytutor.co.uk/answers/24722/A-Level/Chemistry/What-is...

    In contrast, 'Electron Impact' is where a vaporised sample is injected at low pressures, and high energy electrons are fired towards the sample. This removes/knocks off one outer electron forming positive ions. Electron impact is used for elements and substances with low formula masses as it would otherwise cause larger organic molecules to ...

  9. Bromine has an atomic number of 35 but has two stable ... -...

    www.mytutor.co.uk/answers/32249/GCSE/Chemistry/Bromine-has...

    Given that 51% of bromine atoms are bromine-79 and 49% are bromine-81%, work out the relative atomic mass of bromine to the nearest whole number. What is an isotope? (To ensure the students basic understanding on isotopes) Isotopes are different atomic forms of the same element, which have same number of protons but different number of neutrons ...

  10. Explanation of alpha scattering experiment - MyTutor

    www.mytutor.co.uk/answers/21175/GCSE/Physics/Explanation...

    The very small number of alpha particles being deflected straight back indicates that the positive charge and mass of each atom are concentrated into a tiny volume relative to the size of each atom. These conclusions led on to the nuclear atomic model.

  11. What is the relative formula mass of CaCO3? - MyTutor

    www.mytutor.co.uk/answers/4124/GCSE/Chemistry/What-is-the...

    The relative formula mass (RFM) is simply just a sum of the atomic masses that make up the compound in question. Ca = 40. C = 12. O = 16. RFM of CaCO 3 = 40 + 12 + (16 x 3) = 100. Note we have three oxygens so we need to multiply the atomic mass by three before adding the mass of calcium and carbon. The relative formula mass (RFM) is simply ...