Chemistry: Rate of Reaction

Metals generally form positive ions, and non-metals generally form negative ions.

The structure of ionic compounds can be explained in terms of their properties, such as high melting and boiling points, low solubility in water, and high electrical conductivity, due to the strong electrostatic forces between the oppositely charged ions.

A single covalent bond involves the sharing of one pair of electrons, a double covalent bond involves the sharing of two pairs of electrons, and a triple covalent bond involves the sharing of three pairs of electrons.

<p>The properties of covalent molecular substances, such as low melting and boiling points, high solubility in non-polar solvents, and lack of electrical conductivity, can be explained by their molecular structure and the type of covalent bonds between atoms.</p> Signup and view all the answers

<p>The gram formula mass of a substance is equal to the mass of one mole of the substance, and it can be calculated using relative atomic masses.</p> Signup and view all the answers

<p>The concentration of a solution is the amount of solute per unit volume of solution, and it is typically expressed in moles per liter (mol/L).</p> Signup and view all the answers

<p>A catalyst is a substance that speeds up a chemical reaction but can be recovered chemically unchanged at the end of a reaction.</p> Signup and view all the answers

<p>The rate of a reaction can be calculated using the equation: rate = Δ(amount of product)/Δ(time).</p> Signup and view all the answers

<p>The valency of an atom is determined by the number of outer electrons, which in turn determines the group of the periodic table it belongs to.</p> Signup and view all the answers

<p>An isotope is an atom of an element with a specific number of neutrons, and the relative atomic mass of an element is the weighted average of the masses of its isotopes.</p> Signup and view all the answers

<p>The charge on an ion can be predicted from the group of the periodic table it belongs to, with groups 1, 2, and 17 forming +1, +2, and -1 ions, respectively.</p> Signup and view all the answers

<p>An atom is neutral, while an ion has an overall charge due to the gain or loss of electrons.</p> Signup and view all the answers