Grade 10 Chemistry Scheme of Work

<p>Oxygen (O) (B)</p> Signup and view all the answers

<p>C (B)</p> Signup and view all the answers

<p>Atom (C)</p> Signup and view all the answers

<p>Atoms can be divided into smaller particles. (D)</p> Signup and view all the answers

<p>Elements are made up of only one type of atom, while molecules can be made up of two or more different types of atoms. (B)</p> Signup and view all the answers

<p>6 (B)</p> Signup and view all the answers

<p>Sodium carbonate (A)</p> Signup and view all the answers

<p>NaCl (D)</p> Signup and view all the answers

<p>-2 (A)</p> Signup and view all the answers

<p>The oxidation number of oxygen is always -2. (A)</p> Signup and view all the answers

<p>salt (B)</p> Signup and view all the answers

<p>an element (C)</p> Signup and view all the answers

<p>Niels Bohr (C)</p> Signup and view all the answers

<p>number of protons (D)</p> Signup and view all the answers

<p>J.J. Thomson (D)</p> Signup and view all the answers

<p>15 (D)</p> Signup and view all the answers

<p>separation funnel (A)</p> Signup and view all the answers

<p>photon (A)</p> Signup and view all the answers

<p>To separate mixtures of immiscible liquids with different densities (A)</p> Signup and view all the answers

<p>Filtration (D)</p> Signup and view all the answers

<p>Simple distillation separates liquids with different boiling points, while fractional distillation separates liquids with close boiling points. (B)</p> Signup and view all the answers

<p>A mixture of air (A)</p> Signup and view all the answers

<p>The insoluble solid particles that remain on the filter paper (A)</p> Signup and view all the answers

<p>By analyzing the components of the substance separated by the process (D)</p> Signup and view all the answers

<p>Chromatography (D)</p> Signup and view all the answers

<p>Filtration separates solids from liquids, while evaporation separates liquids from solids. (D)</p> Signup and view all the answers

<p>Wood (A)</p> Signup and view all the answers

<p>Glass is resistant to chemical attack by most reagents. (C)</p> Signup and view all the answers

<p>Watch glass (C)</p> Signup and view all the answers

<p>Generating and collecting gases. (D)</p> Signup and view all the answers

<p>Polythene (D)</p> Signup and view all the answers

<p>Reagent bottle (B)</p> Signup and view all the answers

<p>They are resistant to chemical attack. (A)</p> Signup and view all the answers

<p>Metal (C)</p> Signup and view all the answers

<p>The average mass of all the isotopes of the element (B)</p> Signup and view all the answers

<p>25% (A)</p> Signup and view all the answers

<p>Water (B)</p> Signup and view all the answers

<p>NaCl (C)</p> Signup and view all the answers

<p>Two or more (A)</p> Signup and view all the answers

<p>NO3- (A), CO32- (B), SO42- (D)</p> Signup and view all the answers

<p>4 (C)</p> Signup and view all the answers

<p>Organic compounds always contain carbon, while inorganic compounds do not. (B), Organic compounds are naturally occurring, while inorganic compounds are synthetic. (C)</p> Signup and view all the answers

Instruments used for scientific experiments made from various materials.

Used for storing or boiling chemicals due to resistance to reagent attacks.

Used for experiments needing prolonged heating, like crucibles and evaporating dishes.

Made from materials like PVC, used for items like filter funnels and test tube racks.

Includes equipment made from metals like platinum and copper, used for various lab tools.

Used for performing chemical reaction experiments due to its shape.

Includes Bunsen burners and tripod stands, used for heating substances in experiments.

Items like reagent bottles and wash bottles used to store chemicals safely.

A change where no new substances are formed and is easily reversible.

A change resulting in the formation of new substances, typically not easily reversible.

Physical changes are easily reversible while chemical changes are not.

A substance that cannot be broken down into simpler substances by chemical means.

The smallest unit of an element that can participate in a chemical reaction.

The smallest part of a substance that can exist alone and retain its properties, formed from atoms.

Elements that exist as diatomic molecules, such as O2 and H2.

A theory that describes atoms as indivisible particles that combine to form compounds.

The weighted average mass of an element's isotopes based on their abundance.

The percentage of a specific isotope present in an element's sample.

Isotopes of chlorine are Cl-35 and Cl-37 with 75% and 25% abundance.

A substance formed from two or more elements chemically bonded together.

Compounds that are typically derived from living organisms, such as glucose and plastics.

Compounds that do not contain carbon-hydrogen bonds, like water and sodium chloride.

A representation of compounds using symbols and valencies to indicate composition.

Groups of atoms that possess an electric charge, can be positive or negative.

Rules for assigning oxidation states in compounds.

International Union of Pure and Applied Chemistry, regulates compound naming.

Systematic naming of compounds according to IUPAC rules.

Compounds made of two elements; electropositive before non-metal.

Acids containing oxygen; named by the number of O atoms.

Name for H2SO4 according to nomenclature rules.

Different forms of mixtures, including homogeneous and heterogeneous.

Common mixtures include air (homogeneous) and salad (heterogeneous).

A positively charged sub-particle of an atom with a mass of 1.

A negatively charged sub-particle of an atom with a negligible mass (1/1840).

A neutral sub-particle of an atom with a mass of 1, found in the nucleus.

The combining power of an element, often indicated by the number of electrons in the outer shell.

Compounds formed when elements combine with hydrogen, indicated by their valencies.

Atoms of the same element with the same number of protons but different number of neutrons.

An early atomic model proposed by J.J. Thomson where electrons are embedded in a 'pudding' of positive charge.

The arrangement of electrons in an atom's shells, defined by the formula 2n².

Methods used to separate components of mixtures.

A technique that separates insoluble solids from a liquid using filter paper.

A method of separating a solid from a liquid by heating to turn the liquid into vapor.

A device used to separate immiscible liquids based on differences in density.

A technique to separate a liquid from a solution by boiling and condensing.

A method to separate miscible liquids with close boiling points.

A technique for separating mixtures of colors or identifying purity of substances.

The liquid that passes through the filter in a filtration process.