front 1 what elements make up 96% of living things? | back 1 HONC |
front 2 what two particles are found in the nucleus of an atom? | back 2 Protons and Neutrons |
front 3 the nucleus | back 3 the center of an atom that contains the protons and neutrons |
front 4 what makes the center of an atom stable | back 4 equal or one extra neutrons to protons (equal or close to equal) |
front 5 what is an isotope | back 5 the same atom with different charges (neutrons) - has the same number of protons |
front 6 what is an ion | back 6 an atom that carries a positive or negative charge |
front 7 what makes a neutral atom | back 7 equal # of electrons and protons |
front 8 what is the equation for mass | back 8 mass= protons + neutrons |
front 9 what happens if you add a proton | back 9 the element name changes, mass increases, charge increases, and the atomic number goes up |
front 10 what happens if you remove a neutron | back 10 mass decreases |
front 11 what happens if you remove an electron | back 11 charge increases |
front 12 what happens if you add an electron | back 12 charge decreases |
front 13 an atoms has the same number of protons and electrons so it | back 13 dose not have a charge |
front 14 +Ion | back 14 more P than e- |
front 15 -Ion | back 15 more e- than P |
front 16 proton | back 16 an atomic particle in the nucleus of an atom |
front 17 neutron | back 17 an uncharged atomic particle |
front 18 electron | back 18 a negatively charged subatomic particle |
front 19 atom | back 19 a particle of matter that uniquely defines a chemical element |
front 20 charge | back 20 a physical property of matter |
front 21 neutural | back 21 when an atom has an equal number of electrons and protons |
front 22 atomic mass | back 22 the mass of an atom |
front 23 element | back 23 a substance that cannot be broken down into simpler substances |
front 24 orbital (energy shell) | back 24 the location of electrons in an atom |
front 25 # Protons | back 25 atomic number |
front 26 # of electrons | back 26 # of protons |
front 27 # of neutrons | back 27 atomic # - atomic mass |
front 28 proton charge | back 28 + |
front 29 Electron charge | back 29 - |
front 30 neutron charge | back 30 neutral |
front 31 positive ion | back 31 lost electron |
front 32 negative ion | back 32 gained electrons |
front 33 valence electron | back 33 the electrons in the outer shell |
front 34 valence shell | back 34 the outer shell |
front 35 compound | back 35 a substance formed by chemical combination of two or more elements |
front 36 ionic bond | back 36 electrons are transferred from one atom to another (give/take) |
front 37 covalent bond | back 37 electrons are shared between atoms |
front 38 chemical reaction | back 38 a process that changes one set of chemicals into another set of chemicals |
front 39 reactants | back 39 elements/compounds that go into a chemical reaction |
front 40 products | back 40 elements/compounds produced by a chemical reaction |
front 41 conservation of mass | back 41 the mass is the same for the reactants and the products |
front 42 balanced chemical equation | back 42 both sides of the equation have the same number and type of each atom |
front 43 acids | back 43 produces H+ ions, and the PH<7 |
front 44 bases | back 44 produces OH- ions, and the PH>7 |
front 45 PH | back 45 the measurement of the concentration of H+ |
front 46 indicator | back 46 a substance whose solution changes color due to pH levels |
front 47 buffer | back 47 a compound that prevents sharp, sudden changes in pH |
front 48 polar molecule | back 48 a molecule where the charges are unevenly spread out |
front 49 polar covalent bond in water | back 49 when electrons are unevenly shared between the hydrogen and oxygen in a water molecule |
front 50 hydrogen bond | back 50 weak attraction between molecules of different substance |
front 51 cohesion of water | back 51 an attraction between molecules of the same substance |
front 52 adhesion of water | back 52 an attraction between molecules of different substances |
front 53 surface tension | back 53 the way the molecules in the surface of a liquid stick together so that the surface is held together by cohesion |
front 54 temperature moderation | back 54 water's ability to maintain a fairly consistent temperature |
front 55 density of water | back 55 water has different densities in different forms |
front 56 solute | back 56 what is dissolved in a solution |
front 57 solvent | back 57 what does the dissolving in a solution |