Rapid Fire

Matter and Energy: Reporting Category 1
# Teacher Says: Student Says:
1 3 subatomic particles Protons, neutrons, electrons
2 Charges of 3 subatomic particles Proton (+), Electron (-), Neutron (0)
3 Masses of subatomic particles Proton = 1, Neutron = 1, Electron = 0
4 2 regions of an atom Nucleus & Electron cloud
5 Location of protons & neutrons Nucleus  
6 Location of electrons Electron cloud
7 # of Electrons per energy level 2, 8, 8 (18)
8 Determines what element an atom is # of protons
9 Electrons found in outermost energy level Valence electrons
10 Valence electrons determine an atoms ______ Properties
11 Pure substance made of only one type of element Element
12 Two or more elements combined Compound 
13 Atomic mass = _________ + ___________ Protons + Neutrons
14 Atomic number =  Protons and electrons 
15 Group 18, have a full outer energy level, do not react or combine with other atoms Noble gases
16 On the periodic table, period # equals Number of energy levels
17 On the periodic table, group # equals Number of valence electrons (skip groups 3-12) (groups 13-18, disregard the 1)
18 Elements in the same group have similar -  Properties
19 Ductile, malleable, magnetic (some), luster, conductors Properties of metals
20 Location of metalloids on periodic table Stairstep or zig-zag
21 The goal of every atom To get a full outer energy level
22 Stays the same substance Physical change
23 Becomes a new substance Chemical change
24 Production of gas, change in temperature, color change, production of a precipitate Indicators of a chemical change
25 Substances on the left of a chemical reaction Reactants
26 Substances on the right of a chemical reaction Products
27 In a chemical rxn. New subsstances have -  new properties
28 The same number of each atom must be present on both sides of a chemical equation Law of conservation of mass
29 Small number below and after an element's symbol, shows how many of that element are present in the molecule Subscript
30 Large number in front of a molecule, shows how many molecules are present Coefficient
  Use this Chemical formula (called hydrogen sulfide) for #31-34:2H2SO4
31 Number of molecules of hydrogen sulfide 2
32 Number of Elements present in this chemical 3
33 Number of atoms in one molecule 7
34 Total number of atoms present 14
35 Compound containing Carbon and other elements Organic Compound
36 Density =  mass / volume

 
Last Modified: Wednesday, Jan. 11, 2012
 
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