stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Chemistry: Unit 3 Test Review Flashcards | StudBud
Explore
/
Chemistry: Unit 3 Test Review
Chemistry: Unit 3 Test Review
15 terms
·
StudBud Administration
Imported from external platform
Flashcards
15 cards
F
Practice quiz
P
Host live
L
Questions
15
Answers
1
When is the Unit 3 Test for chemistry?
Tomorrow. I will study tonight.
I don't know
Today
After break
2
Which bond character is the strongest?
All bonds are equally strong
Ionic
Nonpolar covalent
Polar covalent
3
How many valence electrons does an Arsenic (As) atom have?
3
1
5
6
4
The Law of Conservation of Mass states:
The type of atoms going into a reaction will change identity
The form of atoms will change shape in a chemical reaction
All of the above
The number of atoms must equal the number of atoms coming out of a reaction
5
A positive Mg
+
ion will attract to what type of charge?
Negative
Positive
Neutral
6
What is the charge of the following polyatomic ion? (Compare the number of expected ve
-
compared to the observable ve
-
)
-2
-1
+1
no charge
7
Look at the periodic table. Which elements will have the most similar properties?
Silicon and Neon
Boron and Hydrogen
Helium and Lithium
Fluorine and Bromine
8
Explain why chlorine has a higher electronegativity than bromine.
Bromine has fewer protons
Chlorine and bromine has the same electronegativity
Chlorine has fewer electrons
Chlorine has a smaller atomic radius than bromine
9
As the electronegativity difference (ΔEN) increases, the polarity of a molecule ______________________.
Stays the same
Decreases
Increases
10
Where will the valence electrons be located in a
nonpolar covalent
bond?
All of the above
Equally in the middle of the atoms
Electrons are not shared but completely transferred
Closer to one atom
11
How many SO
4
molecules are present in the products of this reaction?
3
4
1
2
12
What is the difference between an atom vs. an ion?
An ion has a charge
The terms are interchangeable
An atom has a charge
An ion is neutral
13
What is type of bond is present in a LiO molecule?
Use the electronegativity periodic table.
Ionic
It differs for each bond
Nonpolar covalent
Polar covalent
14
Which soccer player scored the winning goal of the 1986 World Cup with his hand?
Ronaldo
Maradona
Rossi
Socrates
15
What property makes water a universal solvent (dissolves things well)?
Water has oxygen
Water is a liquid
Water is polar
What has 3 atoms
