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The Periodic Table and Chemical Formulas/Equations
The Periodic Table and Chemical Formulas/Equations
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Review for Periodic Table & Chemical Formulas/Equations: 1st 9-wks CBA
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
How many hydrogen atoms are in glucose (C
6
H
12
O
6
)
1
12
5
6
2
Look at Paper: Which of the below elements have similar chemical properties as element 1?
Lithium
Oxygen
Francium
Magnesium
3
Mg
3
O
2:
What is the ratio of Magnesium atoms to oxygen atoms?
3:3
2:3
3:2
1:1
4
Based upon the picture below, which 2 elements would have the most similar chemical properties?
Lithium (Li) & Magnesium (Mg)
Sodium (Na) & Magnesium (Mg)
Oxygen (O) & Nitrogen (N)
Nitrogen (N) & Phosphorus (P)
5
Which of the below contains the greatest number of elements?
KHNO3
Mg20
4Li(BrO2)3
H2O
6
Look at Paper: Which element is the most reactive?
Element 2
Element 1
7
2H
2
+ 3Li
2
OH --> 3H
2
O + 5Li
3
: Which substances in this equation are elements? (2 answers)
2H2
3H2O
3Li2OH
5Li3
8
Which of the below contains the greatest number of atoms?
KHNO3
H2O
4Li(BrO2)3
Mg20
9
Look at Paper: How many valence electrons does Element 2 have?
16
3
6
1
10
Look at Paper: What do element 1 and element 2 have in common?
Nothing: they have nothing in common
Same # of valence electrons
Same # of energy levels
Same type of element
11
2Li
3
(OH) + 3HO --> H
2
O + 4LiO
3
: What is the coefficient the water molecule?
0
3
2
1
12
2Li
3
(OH) + 3HO --> H
2
O + 4LiO
3
: Which of the below are a reactants? (2 answers)
3HO
H2O
2Li3(OH)
4LiO3
13
H
2
O is an example of what?
Element
Chemical Formula
Chemical Equation
Oxygen
14
Look at Paper: Which element is a reactive nonmetal?
Element 1
Element 2
15
2H
2
+ 3Li
2
OH --> 3H
2
O + 5Li
3
: Which substances in this equation are compounds? (2 answers)
3Li2OH
2H2
3H2O
5Li3
16
2Li
3
(OH) + 3HO --> H
2
O + 4LiO
3
: Which of the below are a products? (2 answers)
H2O
3HO
2Li3(OH)
4LiO3
17
Which example below is the accurate way to show an equation for a chemical reaction?
Reactants <-- Products
Reactants --> Products
Products --> Reactants
Reactants = Products
18
2H
2
+ O
2
--> 2H
2
O: How many atoms are in the oxygen molecule?
4
2
0
1
19
Element are arranged on the Periodic Table based on what?
Color
Atomic Numbers
Both: Atomic # & Chemical Properties
Chemical Properties
20
Look at Paper: Which element is a reactive metal?
Element 2
Element 1
