Flashcards for:
Edexcel International GCSE Chemistry Revision

The atomic number (Z) is the number of protons in an atom, while the mass number (A) is the sum of protons and neutrons.

Ionic compounds have high melting and boiling points, are soluble in water, and conduct electricity when molten or in solution.

Relative molecular mass is calculated using the standard of 1/12th of the mass of a carbon-12 atom.

Isotopes of an element have the same number of protons but different numbers of neutrons.

The VSEPR theory helps in determining molecular shapes and angles based on the repulsion between electron pairs surrounding a central atom.

Protons have a charge of +1 and a mass of 1, located in the nucleus of an atom.

Combustion reactions primarily raise concerns regarding CO2 and SO2 emissions, contributing to global warming and acid rain.

Ionic bonding involves the transfer of electrons from metals to non-metals, resulting in the formation of positively and negatively charged ions.

Elements in the periodic table are arranged by increasing atomic number.

Kinetics studies how temperature, concentration, the presence of catalysts, and surface area influence the rates of chemical reactions.

Dynamic equilibrium occurs in a closed system when the rates of forward and backward reactions are equal, and no net change is observed.

Avogadro's number is used to convert between the number of particles and the number of moles in chemical calculations.

Sustainable chemistry emphasizes recycling, employing green chemistry practices, and reducing harmful by-products.

Le Chatelier's principle states that a system at equilibrium will adjust its conditions to counteract changes imposed on it.

The chemical properties of isotopes remain unchanged despite differences in neutrons, due to the consistent number of protons.