BMAT Chemistry Q&A Exam Bundle

Electrolysis Compounds are broken down into simpler substances using electricity. In order to work, ions must be free to move so need to be dissolved in water or melted Electrolyte The liquid that conducts electricity How does electrolysis work There is a flow of electrons that are taken away ...

What is an element a Substance that contains only ONE type of atom. What is a compound 2 or more elements chemically combined What is a mixture A combination of two or more substances that are not chemically combined (can be physically separated) What is the structure of ionic compounds gia...

Reactivity series of metals an order of reactivity, giving the most reactive metal first, based on results from a range of experiments involving metals reacting with oxygen, water, dilute hydrochloric acid and metal salt solutions Extraction of metals Most reactive metals are extracted from their...

solubility is a measure of How easily something will dissolve in a solvent What does solubility depend on Strength of the attractions within the substance being dissolved and between the solute and solvent Solubility increases with temperature True or False True What is the only non- me...

Test for hydrogen Squeaky pop Test for a Carbonate anion (CO32-) React with an acid to release carbon dioxide gas. Effervescence is observed and the production of carbon dioxide can be confirmed using limewater. ALTERNATIVLEY: A solution of a carbonate will also be alkaline, which can be shown...

hydrogen burning splint- squeaky pop oxygen relights glowing splint CO2 turns limewater cloudy when shaken chlorine turns damp blue litmus paper red, then bleached carbonate ions dilute acid and produces CO2 halide ions aq silver nitrate in dilute nitric acid results of halide test...

Quantitative chemistry The sum of atomic mass (Ar) values in a molecule is the molecular mass (Mr) Avogadro's constant gives the number of particles in one mole of a substance: Number of particles = Avogadro's constant x number of moles One mole of a substance has a mass (in grams) equal to the...

What is the formula of a buckminsterfullerene? C60 What is the ionic equation for acid + carbonate? 2H+ (aq) + CO3 2- (aq) -> H2O (l) + CO2 (g) What is the ionic equation for acid + ammonia? H+ (aq) + NH3 (aq) -> NH4 + (aq) Describe the ionic equation of a precipitation reaction. 1. O...

Atom structure Protons and neutrons in the nucleus Electrons arranged around the nucleus in shells Overall charge is zero - atom is neutral Proton relative charge 1+ positive Neutron relative charge 0 Electron relative charge 1- negative Proton relative mass 1 Neutron rela...

Proton = r.m is 1, r.c is +1 Neutron = r.m s 1, r.c. is 0 Electron = r.m is 0.0005, r.c is -1 State the relative mass and charge of: a. Proton b. Neutron c. Electron The number of protons in the nucleus of an atom. What does the atomic number represent? The number of protons and neutrons ...

SALTS All solid salts consist of positive and negative ions, and some of them contain water molecules as well. The water in a lattice is called water of crystallisation. One mole of a hydrated salt always has a certain number of moles of water of crystallisation shown in the formula. For example,...

what happens to the solubility of gases as pressure increases? increases what happens to the solubility of gases as temperature increases? decreases how is the chromatography retardation factor calculated? distance moved by compound/distance moved by solvent how is the relative atomic mass of an ...