Acids, Bases, Solutions
1. Which compound is the most acidic?
A. Soap (pH=10)
B. Coffee (pH=4)
C. H2O (pH=7)
D. Vinegar (pH=2))
D. Vinegar (pH=2))
What kind of bond is formed between metal and non-metal atoms?
A. Super glue
B. Metallic
C. Covalent
D. Ionic
D. Ionic
When it is eventually found, element 116 will be in the same group as:
A. Oxygen
B. Nitrogen
C. Boron
D. Chlorine
D. Chlorine
Which of these phase changes requires an input of heat to proceed?
A. Deposition
B. Freezing
C. Condensation
D. Melting
D. Melting
How many carbon atoms are there in this skeletal representation? C8H10N4O2 - Caffeine skeletal structure
A. 6
B. 7
C. 8
D. 9
C. 8
In a cup of Frappuccino, which is considered to be the solvent?
A. Water B
B. Whipped Cream
C. Sugar
D. Chocolate Syrup
A. Water
Create an LDS drawing of CH2O to help you solve the following question. How many double bonds are there in the above molecule?
A. 0
B. 1
C. 2
D. 3
B. 1
What is the symbol of the element in Group 14, Period 3?
A. K
B. O
C. Si
D. Cl
C. Si
Create an LDS drawing of CH2O to help you solve the following question. How many single bonds does this molecule have?
A. 0
B. 1
C. 2
D. 3
C. 2
How many hydrogen atoms are there in the molecule shown in the following? (Referring to C8H10N4O2 - Caffeine skeletal structure
A. 8
B. 9
C. 10
D. 11
Which of the following is a strong acid?
A. HA
B. HB
C. Both are strong
D. Neither is strong
A. HA
Create an LDS drawing of CH2O to help you solve the following question. How many lone pairs are there in the above molecule?
A. 0
B. 1
C. 2
D. 3
C. 2
Which element below has 5 valence electrons?
A. Nitrogen
B. Boron
C. Carbon
D. Oxygen
A. Nitrogen
An element has a melting point of −82∘ degrees and a boiling point of 160∘ degrees. In what phase does this element exist at room temperature?
A. Liquid
B. Gas
C. Solid
D. Solution
B. Gas
How many lone pairs are in the molecule in the following? Referring to C8H10N4O2 - Caffeine skeletal structure.
A. 4
B. 5
C. 6
D. 8
D.8
Which solution has the higher pH?
A. HA
B. HB
C. Both
B. HB
What is the formula for magnesium nitrate?
A. Mg2NO3
B. Mg(NO3)2
C. Mg(NO3)3
D. MgNO3
C. Mg(NO3)3
19. The following question pertains to the atom Selenium (Se). In the Planetary Model of Selenium (Se), how many shells are occupied?
A. 2
B. 3
C. 4
D. 5
C. 4
Which of the following has no lone pairs?
A. CO2
B. H2O
C. NH3
D. CH4
D. CH4
Which of the following compounds has the lowest boiling point?
A. HCN
B. CO2
C. C2H6
D. CH4
D. CH4
If the pH of the solutions is different, what could be done to equalize them?
A. Put more HA into the HA solution on the left
B. Put more HB into the HB solution on the right
C. Put some alcohol in the HB solution
D. Put more water in the HB solution
D. Put more water in the HB solution
Which list of coefficients will balance this equation: ___AlBr3+___K2SO4→___KBr+___Al2(SO4)3
A. 1, 6, 2, 1
B. 2, 3, 3, 1
C. 3, 3, 1, 3
D. 2, 3, 6, 1
B. 2, 3, 3, 1
The following question pertains to the atom Selenium (Se). How many total electrons does Selenium have?
A. 32
B. 14
C. 18
D. 34
D. 34
Which of these is NOT a chemical change?
A. Banana decays
B. Baking a cake
C. Burning wood
D. Melting ice
D. Melting ice
Which of these is the chemical name of CuCl2?
A. cupric(II) chloride
B. copper chloride
C. copper chlorine
D. copper(II) chloride
D. copper(II) chloride