Chemistry Unit Review Question Preview (ID: 26584)


Chemistry Covering From Tools Of Measurement To Physical Chemical Changes. TEACHERS: click here for quick copy question ID numbers.

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

Which is a chemical change?
a) dissolving salt in water
b) boiling water
c) iron rusting
d) melting ice

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 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

Melting ice is what type of change?
a) Physical
b) Chemical
c)
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)

_____________ 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)

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)

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)

How would sugar be classified?
a) mixture
b) element
c) compound
d)

What are the vertical columns in the periodic table called?
a) groups
b) families
c) periods
d) both A and B

Elements in the same family have _______________________.
a) nothing in common
b) adhesive properties
c) different properties
d) similar properties

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

All matter is made of extremely small particles called ______________.
a) elements
b) atoms
c) molecules
d) compounds

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