Grade 11 Physical Sciences Study Guide Overview

Flashcards covering key concepts from the Grade 11 Physical Sciences study guide.

Grade 11 Physical Sciences 3-in-1 CAPS CLASS TEXT & STUDY GUIDE

A comprehensive guide simplifying Grade 11 Physical Sciences with explanatory notes, exercises, and exam questions.

Stoichiometry

The study of the quantitative composition of chemical substances and the relationships between reacting quantities.

Law of Conservation of Matter

The principle stating that the mass of substances in a chemical reaction remains constant; mass of reactants equals mass of products.

Avogadro’s Constant (N_A)

The number of particles (atoms, molecules) in one mole of a substance, approximately $6.02 imes 10^{23}$.

Molar Volume of Gases

The volume occupied by one mole of gas at standard temperature and pressure (STP); typically $22.4 ext{ dm}^3$.

Limiting Reagent

The reactant that is completely consumed in a chemical reaction, determining the maximum amount of product formed.

Percentage Yield

The ratio of the actual yield of a product to the theoretical yield, expressed as a percentage.

Empirical Formula

The simplest whole number ratio of elements in a compound.

Molar Mass (M)

The mass in grams of one mole of a substance, expressed in g·mol⁻¹.

Concentration (c)

The amount of solute in a given volume of solvent, typically expressed in moles per liter (mol·dm⁻³).

Ideal Gas Law

An equation of state for ideal gases, defined by $pV = nRT$, where $p$ is pressure, $V$ is volume, $n$ is moles, $R$ is the gas constant, and $T$ is temperature.