Exothermic & Endothermic Reactions Crossword Puzzle

QUESTIONS LIST:

• degrees celsius: a measurement of temperature
• exothermic: a reaction that produces heat
• atoms: an extremely small piece of something
• reactants: another name for the molecules involved in a chemical reaction
• absorbed: taken in or soaked up
• chemical: any basic substance that is used in or produced by a reaction involving changes to atoms or molecules#
• gases: another word for the substances found in air
• endothermic: a reaction that causes the temperature to fall
• temperature: used to measure temperature
• oxygen: a molecule in the air we breath
• calorimeter: a piece of equipment for measuring the amount of heat lost or produced in a chemical reaction
• hot: high temperature
• methane: a gas with no smell or colour
• injury: physical harm or damage to someone
• dissolve: what happens to sugar in tea
• cold: low temperature
• chemical energy: what is the energy stored in the bonds that connect atoms and molecules together
• bonds: how atoms stick together
• molecules: a group of atoms bonded together
• water: a chemical substance that has 2 hydrogen atoms and 1 oxygen atom