CIE IGCSE Chemistry Solved Past Paper May/June 2020 P42
Kirchhoff’s Laws
It is relatively easy to find a single equivalent resistance when two or more resistors are connected in series, parallel, or combination of both. These circuits follow Ohm’s law.
CIE A Level Chemistry Solved Past Paper May/June 2020 P23
1 ai) Barium metal burns with pale green flame and forms white solid BaO.
CIE A Level Chemistry Solved Past Paper May/June 2020 P22
1c) Gallium has an electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1: lowest energy level is the one which is nearest to the atom’s nucleus and that is s subshell of quantum shell 1. Highest energy level is in quantum shell 4 and has p subshell with only 1 electron.
Electricity
Metals are good conductor of electricity. They differ in electron (negatively charged particle) arrangement- few metals carry loosely bound electrons in their outermost shell.
CIE A Level Chemistry Solved Past Paper Feb/March 2019 P22
CIE A Level Chemistry Solved Past Paper Feb/March 2019 P22
Electric Circuits
One simple way of knowing electric circuits is, to recall what do you do when you enter into home? You press electric switch and instantly light bulb turn on.
CIE A Level Chemistry Solved Past Paper Oct/Nov 2019 P22
1 aiii) Ionisation energy is energy required to remove an electron from a gaseous atom’s outermost shell. When nucleur attraction increases, ionisation energy increases and nucleur attraction increases when number of electrons increase and shielding effect remains same.
CIE IGCSE Chemistry Solved Past Paper May/June 2020 P41
CIE IGCSE Chemistry Solved Past Paper May/June 2020 P41