Name ______________________________
ILS
Elements, Compounds, Mixtures, pH Quiz
Part 1: Fill in the blanks where necessary.
Elements:
 A pure substance containing only one kind of ____________.
Compounds:
 A pure substance containing two or more kinds of _______________.
Mixtures:
 Two or more ________________ or _________________ NOT chemically combined.
 Mixtures can be uniform (called ________________________) and are known as solutions.
 Mixtures can also be non-uniform (called ________________________).
Part 2: Classify each as elements (E), compounds (C) or Mixtures (M) X if it is none.
___Diamond (C)
___Air
___Krypton (K)
___Sugar (C6H12O6)
___Milk
___Sulfuric Acid (H2SO4) ___Gasoline
___Bismuth (Bi)
___Uranium (U)
___Iron (Fe)
___Electricity
___Popcorn
Part 3: Match each diagram with its correct description. Diagrams will be used once.
A
B
C
D
E
___1. Pure Element – only one type of atom present.
___2. Mixture of two elements – two types of uncombined atoms present.
___3. Pure compound – only one type of compound present.
___4. Mixture of two compounds – two types of compounds present.
___5. Mixture of a compound and an element.
Column A
1. Summer Sausage
2. Steam
3. Salt Water
4. Pencil lead (Pb)
8. Toothpaste (Na2HPO4)
Column B
Column C
Name ______________________________
ILS
What is the pH scale? ________________________________________
What numbers are acids associated with on the pH scale? ______________
What numbers are bases associated with on the pH scale? _____________
Describe how to determine the strength of an acid or a base. __________________
The pictures below are of two acids in water. Which one is the strongest acid? How do you
know? ______________________________________
a.
b.
H+
H+
H+
H+
H+
H+
H+
H+
The pictures below are of two bases in water. Which one is the strongest base? How do you
know? ______________________________________
a.
b.
OHOH-
OH- OHOH- OH-
What is a buffer or neutralization reaction? _______________________________
If a small amount of a strong base were added to a larger amount of a strong acid, what would
be the approximate pH of the mixture? _________