Module 2 : Chapter 1 - Atoms and reactions

Question 1

What is a proton

Answer 1

A stable subatpomic particle occuring in all atomic nuclei, with a positoive charge

Question 2

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What is a neutron

Answer 2

a sub atomic particle with neutral charge present in all aomic nuclei except hydrogen

Question 3

What is an electron

Answer 3

A sub atomic particle with a negative charge and a relative mass of 1/2000th that of a proton

Question 3

What is an atomic number

Answer 3

the number of protons in the nucleas

Question 4

What is an isotope

Answer 4

Atoms of the same element with different number of neutrons but same number of protons

Question 5

What is the mass number

Answer 5

Total number of protons and neutrons in a nucleas

Question 6

What is a relative atomic mass

Answer 6

ratio of the average mean mass of one atom of an element to 1/12 of the mass of an atom of carbon-12

Question 7

What is mass spectrometry

Answer 7

an analytical tool useful for measuring the mass-to-charge ratio (m/z) of one or more molecules present in a sample

Question 8

What is the equation to work out relative atomic mass

Answer 8

(Isotopic mass x relative abundance) + (Isotopic mass x relative abundance) / 100 or total abundance

Question 9

What is an ion

Answer 9

A species with a net electric charge due to the losss or gain of one or more electrons