Chemical Reactions Revision Crossword Puzzle

QUESTIONS LIST:

• precipitate: a solid formed during a precipitation reaction
• covalent: a chemical compound formed when atoms share electrons
• ionic: a chemical compound formed from positive and negative ions
• salt: a product of a chemical reaction between an acid and a metal
• combustion: another name for burning
• thermal: name of decomposing reaction involving heat
• temperature: the rate of a chemical reaction can be increased by increasing the _ of the reactants
• hydrogen: flammable gas, when ignited makes a 'pop' sound
• dioxide: during a reaction between an acid and carbonate, a gas called carbon _ is formed
• decomposition: what happens when a substance breaks down into smaller parts
• dependent: name of variable that is measured during an investigation
• products: name given to what is made during a chemical reaction
• neutralization: name of reaction between an acid and a base
• mass: the law of conversation of _ states that mass before and after a reaction stays the same
• corrosion: name of the reaction that occurs when rust forms
• independent: name of variable that is changed during an investigation
• endothermic: a chemical reaction in which heat is absorbed from the surroundings
• safety: when working with acids it is important to project your eyes with _ glasses
• reactants: name given to the ingredients of a chemical reaction