Chemistry Unit Review Question Preview (ID: 26584)
Chemistry Covering From Tools Of Measurement To Physical Chemical Changes.
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All matter is made of extremely small particles called ______________.
a) elements
b) atoms
c) molecules
d) compounds
At the center of every atom lies a small, dense ______________ that is positively charged.
a) orbital cloud
b) neutron
c) nucleus
d) electron
Neon is a _________________.
a) metal
b) nonmetal
c) metalloid
d) transition metal
Elements in the same family have _______________________.
a) nothing in common
b) adhesive properties
c) different properties
d) similar properties
What are the vertical columns in the periodic table called?
a) groups
b) families
c) periods
d) both A and B
How would sugar be classified?
a) mixture
b) element
c) compound
d)
Suppose your teacher has a container filled with iron and rocks. Your teacher uses a magnet to separate the iron form the rocks. The original container of iron and sand could be called a ______________________________.
a) mixture
b) chemical compound
c) solution
d)
The three main categories of elements on the periodic table are __________,_____________and ____________.
a) pure substances, compounds, and mixtures
b) alloys, nonmetals, and metalloids
c) metals, nonmetals, and metalloids
d)
With litums paper, what color represents a base?
a) White
b) Blue
c) Red
d)
_____________ and _____________ have about the same mass and are found in the nucleus of an atom.
a) Electrons and Protons
b) Protons and Neutrons
c) Neutrons and Electrons
d)
Within the atom, there are three subatomic particles called protons, newton, and orbital rings.
a) true
b) false
c)
d)
Phenolthalein becomes what color in an acid?
a) magenta (pink)
b) blue
c) red
d) clear
Which pH number indicates a strong base?
a) pH7
b) pH8
c) pH13
d) pH 0
A burning match is what type of change?
a) Physical
b) Chemical
c)
d)
Melting ice is what type of change?
a) Physical
b) Chemical
c)
d)
Which substance is the strongest acid?
a) NaOH with a pH 10
b) Saliva with a pH 6
c) Lemon Juice with a pH 2
d) Blood with a pH 8
Which of the following is the strongest base?
a) saliva with a pH 6
b) Bleach with a pH 9
c) Blood with a pH 8
d) NaOH with a pH 10
Which is a chemical change?
a) dissolving salt in water
b) boiling water
c) iron rusting
d) melting ice
There are how many Hydrogen atoms in C6H12O5?
a) 6
b) 12
c) 5
d)
Which is a physical change?
a) burning coal
b) tearing paper
c) digesting food
d) iron rusting
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