What type of chemist exclusively studies most carbon compounds?
a) physical chemist
b) organic chemist
c) biochemist
d) inorganic chemist
What is an organic chemist
100
Which of the following is the most electronegative?
a) potssium
b) frncium
c) stine
d) chlorine
What is chlorine
100
What type of chemist exclusively studies most carbon compounds?
a) physical chemist
b) organic chemist
c) biochemist
d) inorgnic chemist
What is orgnic chemist
100
An atom of magnesium has an atomic number of 12 and mass number of 24. How many protons AND neutrons are in the nucleus?
a) 12
b) 24
c) 36
d) 48
What is 24
200
Which of these chemical formulas below represent both an element and a molecule?
a) Cl2 (subscript)
b) KCl
c) Ar
d) NO2 (subscript)
What is Cl2 (subscript)
200
An atom of magnesium has an atomic number of 12 and a mass number of 24. How many neutrons are in the nucleus?
a) 12
b) 24
c) 36
d)48
What is 12
200
Which of the following chemical formulas represent both an element and a molecule?
a) NaCl
b) O2 (subscript)
c) He
d) SO2 (subscript)
What is O2 (subscript)
200
How many electrons are depicted in the electron dot diagram of an electrically neutral oxygen atom?
a) two
b) five
c) eight
d) six
What is six
300
A miner finds a small mineral fragment with a volume of 11.5 cm3 (superscript) and a mass of 57.4 g. What is the density of that mineral fragment?
a) 0.20 g/cm3
b) 5.00 g/cm3
c) 5.74 g/cm3
d) 164 g/cm3
What is 5.00 g/cm3
300
Which subatomic particles are found outside of the nucleus of an atom?
a) protons
b) neutrons
c) protons and neutrons
d) electrons
What are electrons
300
Which of the following elements is the most electronegtive?
a) sodium
b) fluorine
c) francium
d) radon
What is fluorine
400
In which group of the periodic table do you find halogens?
a) 1A
b) 2A
c) 7A
d) 8A
What is 7A
400
Which feature of a chemical equation represents the law of conservation of matter?
a) chemical formulas
b) subscripts
c) coefficients
d) balanced equation
What is balanced equation
400
Which class of elements if most likely gas at room temperature?
a) nonmentals
b) metals
c) metalloids
d) inner transition metls
What is nonmetals
500
What type of reaction is this:
Cl2 (subscript) + 2KI ----> 2KCl + I2 (subscript)
a) double displacement reaction
b) single displacement reaction
c) an awesome reaction
d) combustion reaction
What is a single displacement reaction
500
Is this equation balanced or unbalanced?
4Al + 3O2 (subscript) ---> 2Al2(subscript)O3(subscript)
a) balanced
b) unbalanced
What is balanced
500
Bsed on its type of chemical bond, which of the following has the highest boiling point?
a) carbon tetrchloride
b) lithium fluoride
c) carbon dioxide
d) hydrogen