Elements and Atoms
Periodic Table
Chemical Reactions
Solubility
pH
100
How many protons do Carbon Atoms have?
6
100
Are non-metals on the left or right of the Periodic Table?
Right
100
Balance this equation: __ O2 + __H2 --> ___ H2O
__ O2 + 2 H2 --> 2 H2O
100
Double replacement reactions often form a solid _______________.
precipitate
100
What does a neutralization reaction make?
Water
200
What is the electron configuration of a Cl- ion?
1s2, 2s2, 2p6, 3s2, 3p6
200
Which bonds SHARE electrons between atoms, and between what kinds of elements do they form?
Covalent bonds between non-metals
200
Which comes AFTER the arrow in a chemical equation, reactants or products?
Products
200
Does the positive or negative ion come first in a polyatomic ion?
Positive
200
What range of pH is an acid?
Under 7
300
Atoms want to have how many electrons at the highest energy level, or valence electrons?
8
300
Are elements with the highest electronegativity at the top right or bottom left of the PT?
Top Right
300
What type of reaction is this: AB + C --> AC + B ?
Single Replacement Reaction
300
When a substance is INSOLUBLE in water, what is put in parentheses after its chemical formula?
(s)
300
What ions are high in concentration in strong bases?
OH-
400
Draw the lewis dot structure for H2O, water.
H-O-H
400
Elements in the same __________ have the same number of valence electrons, and therefore have similar properties
Group
400
What evidence of chemical reactions can we "observe" easily during an exothermic reaction?
temperature change
400
What type of reactant runs out first?
Limiting reactant
400
What is the pH of 1.6M HCl?
-0.2
500
How does an atom emit light?
Electrons go from the excited to ground state, emitting a photon.
500
Which atoms are least reactive on the PT?
Noble Gasses, the last group with 8 valence electrons
500
When NaCl is added to Ca(OH)2, what are the products of the reaction, including their state of matter?
NaOH (aq) and CaCl2 (aq)
500
If CH4 + 2 O2 --> CO2 + 2 H2O , and we use 10 moles of CH4, how many moles of H2O are made?
20 moles H2O
500
How many moles of HCl were used if 0.03 L of 1 M HCl were used?
0.03 moles of HCl
M
e
n
u