Glossary-Chapter 7 Flashcards
Boiling Definition
A change of state where a liquid is heated and changes to a gas within the liquid.
Chemical Change Definition
A change that results in a new substance being formed
Chemical Properties
The characteristics of substances that determine how they react chemically with other substances.
Chemical Reaction Definition
The process of rearranging atoms in substances to form different substances.
Chlorophyll Definition
The substance found in plant leaves that make leaves green and collects energy from the sun for photosynthesis
Combustion Definition
Any chemical reaction where a substance burns in oxygen to produce light and heat
Condensation Definition
A change of state where a gas is cooled and forms a liquid.
Contraction Definition
A decrease in size
Corrosion Definition
When a metal reacts with the chemicals in its environment
Crystallisation Definition
Evaporation form a solution leaving solute crystals behind
Deposition Definition
A change of state from gas to solid
Diffusion
A process where two liquids or two gasses mix due to the motion of their particles
Evaporation Definition
The change of state when gas particles in a liquid escape to the surface to become a gas
Expansion Definition
An increase in size
Freezing Definition
The change of state from a liquid to solid
Glucose Definition
A form of sugar that is produced during photosynthesis and used in respiration to produce energy
Melting Definition
The change of state when a solid is heated and forms a liquid
Particle models Definition
A simplified representation of solids, liquids and gases
Photosynthesis Definition
The chemical reaction in plants that converts carbon dioxide and water into oxygen and glucose using energy from the sun.
Physical Change Definition
A change that does not result in a new substance being produced
Physical Properties Definition
The characteristics of a substance that describe how it looks, feels, smells, and responds to external forces.
Precipitate Definition
A solid formed during a chemical change.
Products Definition
The substance formed in chemical reactions
Properties Definition
The characteristics of a substance, they can be either physical or chemical
Reactants Definition
The starting substances in chemical reactions
Respiration Definition
A chemical reaction that occurs in all living cells. In this reaction oxygen and glucose are converted into water and carbon dioxide while releasing energy. The energy released can be used by living things to live, grow and move
Solidification(Freezing) Definition
The change of state from liquid to solid
Solute Definition
A substance dissolved in a solvent to form a solution
Solution Definition
A mixture where the substances are mixed on the atomic level
Solvent Defintion
The substance (usually a liquid) that dissolves a solute to form a solution
Sublimation Definition
A change of state from solid to gas
Word equation Definition
A simple chemical equation where chemicals are represented by their names.
