Devise experiments to label six numbered solutions correctly using chemicals and apparatus in the laboratory.
Suggest some chemical and physical properties of a pheromone described and answer some problems related to it.
Calculate the thickness of a paint film and estimate roughly its thickness in titanium atoms/ions.
Make some copper metal starting from copper(II) nitrate crystals.
Find out and list as much information as possible about a weak acid from experimental results shown.
Investigate what happens when different charged plastics are held near a jet of water issuing from a burette, and explain your observations.
Find the best catalyst for the decomposition of hydrogen peroxide from solutions provided.
Devise experiments to label three white solids correctly by using chemicals and apparatus in the laboratory.
Devise a method for making a copper catalyst dispersed on an aluminium oxide support.
Estimate the approximate rate of growth of human hair in ms⁻¹ and use this figure to estimate the number of amino acid molecules which are incorporated in a growing hair every second.
Identify a given solid; make a list of all of the compounds the solid could be, suggest as many ways as possible of identifying the solid and use this information to devise an analytical procedure; use this procedure to identify the solid.
Estimate the number of H⁺(aq) ions in a single drop of: water; 1.0 mol dm⁻³ HCl; 1.0 mol dm⁻³ NaOH.
Carry out certain experiments in a given order. Then without doing any calculations, explain what the driving force of the reaction is in each case – ie qualitatively rather than quantitatively.
Devise experiments to label some bottles correctly, using two different approaches.
Devise a procedure to identify four solids and then use this to carry out the identification.
Consider data on the specific heat capacities for some metals and solve three problems related to those data.
Consider data on the densities of six primary alcohols and solve four problems based on those data.
Devise experiments to determine which of five solids is the chloride by using chemicals and apparatus in the laboratory.
Explain two observations related to the production of a jelly-like solid when two detergents were used in combination.
Devise structures for cobalt complexes given, decide how to distinguish between the four complexes, and identify some properties or characteristics that are the same for all four complexes.
Site powered by Webvision Cloud