Ch.2 vocabs
Terms
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- pH scale
- measurement system to indicate the concentration of H= ions from in solution
- ionic bonds
- formed when one or more electrons are transferred from one atom to another
- Vander Waals forces
- forces of attraction or repulsion between molecules
- nucleus
- a part of the cell containing DNA and RNA and responsible for growth and reproduction
- compound
- (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
- acid
- any compound that forms H+ ions in solution
- molecule
- cluster of atoms held together by chemical bonds. Remember, a molecule can be one or more atoms. But a compound has to be two or more.
- atom
- VERY small particle made of protons (+), electrons (-) and neutrons (no charge)
- monomers
- smaller untis that join together to create polymer
- Buffers
- are weak acids or base that can react with strong acids or bases to prevent sharp, sudden changes in pH
- base
- compound that produces hydroxide ions in solution
- suspensions
- mixture of water and nondissolved material
- isotopes
- atoms of the same element that differ in the number of neutrons they contain
- covalent bond
- a chemical bond that involves sharing a pair of electrons between atoms in a molecule
- electron
- A negatively charged subatomic particle located outside the nucleus.
- solution
- Combination of a solute and a solvent
- ions
- are charged particles that form when atoms gain or loose electrons
- solvent
- a liquid substance capable of dissolving other substances
- proton
- positively charged particle of an atom
- solute
- the dissolved substance in a solution