IGCSE Edexcel Chemistry (Inorganic Chemistry) Exam With 100% Correct Answers 2024

IGCSE Edexcel Chemistry (Inorganic Chemistry) Exam With 100% Correct Answers 2024 Formula of nitric acid HNO3 Name of HCl Hydrochloric acid Formula of sulfuric acid H2SO4 Test for hydrogen gas Lighted splint. Squeaky pop. Test for oxygen gas Relights a glowing splint Test for carbon dioxide Turns limewater cloudy Test for ammonia gas Damp red litmus paper turns blue Test for chlorine gas Bleaches damp litmus paper Bleaches damp litmus paper Chlorine gas A gas that turns damp red litmus paper turns blue Ammonia Turns limewater cloudy Carbon Dioxide Relights a glowing splint Oxygen Flammable gas that gives a squeaky pop. Hydrogen Name of group 1 elements Alkali metals Group 1 elements get more reactive ... the group down When group 1 metals react do they gain or lose one electron? Lose Why do metals get more reactive down the groups? Lower down in the group -electrons are further from the nucleus -weaker force of attraction -easier to lose an electron Products of lithium reacting with water Lithium hydroxide and hydrogen Products of sodium reacting with water Sodium hydroxide and hydrogen Products of potassium reacting with water Potassium hydroxide and hydrogen Order the metals in increasing reactivity: Potassium, Lithium, Sodium Lithium, Sodium, Potassium Observations of lithium reacting with water -fizzing -lithium disappears -floats Observations of sodium reacting with water -fizzing -melts into a ball -sodium disappears -floats Observations of potassium reacting with water -fizzing -lilac flame -potassium disappears -floats Observations of reacting rubidium with water -explodes How many electrons are in the o