Chemistry Reactions

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  1. 1. A reaction that releases energy to its surroundings, often resulting in an increase in temperature.
  2. 4. determined by the number of electrons it can gain, lose, or share to form chemical bonds with other atoms.
  3. 5. A reaction that absorbs energy from its surroundings, often resulting in a decrease in temperature.
  4. 7. The smallest unit of a chemical element that retains its unique properties.
  5. 11. A substance that changes colour used to detect the presence of specific substances.
  6. 12. A substance that donates hydrogen ions (H+) or accepts electron pairs in a chemical reaction, typically characterized by a sour taste, the ability to turn litmus paper red, and the ability to react with bases to form salts.
  7. 13. A chemical reaction between an acid and a base, resulting in the formation of a salt and water, and typically characterized by the neutralization of acidic and basic properties.
  8. 14. The formation of a solid (precipitate) from a solution due to a chemical reaction between dissolved substances.
  9. 16. A substance that accepts hydrogen ions (H+) or donates electron pairs in a chemical reaction, typically characterized by a bitter taste, a slippery feel, the ability to turn litmus paper blue, and the ability to react with acids to form salts.
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  1. 2. of Mass The principle that states that the total mass of a closed system remains constant during a chemical reaction or physical change.
  2. 3. A substance that undergoes a chemical reaction and is consumed or transformed to produce one or more new substances called products.
  3. 6. A rapid chemical reaction between a fuel (such as a hydrocarbon) and an oxidant (usually oxygen) that produces heat and light.
  4. 8. Bond A type of chemical bond in which two atoms share one or more pairs of electrons
  5. 9. Change A process in which one or more substances are transformed into different substances with distinct chemical properties. It usually involves the breaking and formation of chemical bonds.
  6. 10. A substance that is formed as a result of a chemical reaction.
  7. 14. change A change in the physical properties of a substance, such as its shape, size, or state, without a change in its chemical composition.
  8. 15. Bond A type of chemical bond that forms between two atoms when one or more electrons are transferred from one atom to another