Elements in the first column of the periodic table are known as "Alkali Metals." These elements, when ionized, have in common:
oxidation number of 1-
oxidation number 1+
oxidation number 2-
oxidation number 2+
2. Multiple Choice
30 seconds
1 pt
Atoms with the same atomic number but different atomic mass are called:
protypes
subtypes
isotopes
ions
3. Multiple Choice
30 seconds
1 pt
The periodic table notation for nitrogen "N" is shown below. An atom of nitrogen has how many electrons?
7
8
9
14
4. Multiple Choice
30 seconds
1 pt
Use the diagram of the periodic table below to answer the following questions. What group has two valence electrons in the outermost energy level
2
13
16
19
5. Multiple Choice
30 seconds
1 pt
How many energy levels are "filled" in a Krypton atom?
3
4
5
6
6. Multiple Choice
30 seconds
1 pt
Sodium forms an ionic bond with chlorine when sodium _______ an electron and Chlorine ______ an electron.
shares, shares
loses, gains
gains, loses
loses, loses
7. Multiple Choice
30 seconds
1 pt
Which of the following substances is a base?
Vinegar
Ammonia
lemon juice
Distilled water
8. Multiple Choice
30 seconds
1 pt
In the periodic table notation below, what information does the number 40.078 tell you.
# of protons
# of neutrons
Atomic number
Atomic mass
9. Multiple Choice
30 seconds
1 pt
Elements in the same column on the periodic table have similar chemical reactivity because:
They contain similar amounts of energy levels
they have the same number of valence shell electrons
atoms prefer to have completely full or completely empty valence shells
they have similar numbers of isotopes
10. Multiple Choice
30 seconds
1 pt
The noble gases, such as helium "He" and xenon "Xe", are non-reactive because:
They have completely filled their outer electron shells
they are chemically unstable
they are unusually large atoms.
they have been around longest on the Earth
11. Multiple Choice
30 seconds
1 pt
An Atom contains _______________ in various energy levels.
neutrons
protons
electrons
ions
12. Multiple Choice
30 seconds
1 pt
Which of the following pH values is the most acidic?
1
3
5
14
13. Multiple Choice
30 seconds
1 pt
Elements in the same column on the periodic table have similar chemical re-activity because:
They contain similar amounts of energy levels
they have the same number of valence shell electrons
atoms prefer to have completely full or completely empty valence shells
they have similar numbers of isotopes
14. Multiple Choice
30 seconds
1 pt
The ________ is one kind of particle that makes up the atom and carries a positive charge. The neutron makes up for "missing mass" and is found in the nucleus. The third subatomic particle carries a ___________ charge and has almost no mass.
electron, negative
proton, negative
proton, neutral
proton, positive
15. Multiple Choice
30 seconds
1 pt
When two element combine and share an electron, Sharing of electrons is what type of bond.
ionic
covalent
transitional
hydroblast
16. Multiple Choice
30 seconds
1 pt
When two elements combine and one element transfer all of it valence electron to the other element, this type of bond is known as:
ionic
covalent
transitional
hydroblast
17. Multiple Choice
30 seconds
1 pt
Titration of a base to acid, determines....
the concentration of a acid to a base
pH of the acid
pH of the base
the chemical formula for the acid and base
18. Multiple Choice
30 seconds
1 pt
A hypothesis is a _______:
Law
Theory
Control
Possible solution
19. Multiple Choice
30 seconds
1 pt
Hypothesis must be testable.
True
False
20. Multiple Choice
30 seconds
1 pt
Which of the following is a testable hypothesis
The car is a mustang
The mustang is black with white stripes
The car will not start
There is a mustang symbol in the front of the grill
21. Multiple Choice
30 seconds
1 pt
Which equipment would you use to measure a block of wood?
graduated cyliner
beaker
balance beam/scale
test tube
22. Multiple Choice
30 seconds
1 pt
Which equipment would you use to measure a precisely 50 mL
beaker
test tube
balance beam/scale
graduated cylinder
23. Multiple Choice
30 seconds
1 pt
Name the above element.
Boron
Nitrogen
oxygen
Carbon
24. Multiple Choice
30 seconds
1 pt
How many electrons does the above element have?
4
5
6
7
25. Multiple Choice
30 seconds
1 pt
How many neutrons does the above element have?
4
5
6
7
26. Multiple Choice
30 seconds
1 pt
A problem is usually posed in the form of a_______:
Method
Question
Experiment
Data
27. Multiple Choice
30 seconds
1 pt
A common isotope of Carbon "C" has a mass number of 13. The total number of subatomic particles in the nucleus would be