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Chem Exam 1- Quizzes
Terms in this set (32)
The primary substances of which all other things are composed are
Au is the symbol for
correct symbol for aluminum
correct symbol for iron
correct symbol for mercury
correct symbol for potassium
correct symbol silver
correct symbol gold
Ca is the symbol for
Which of the following is a characteristic of the modern periodic table?
The elements in each group have similar chemical properties
Which of the following properties is not a characteristic of the Group 1A elements (alkali metals)
Most of them are liquids at room temp
The Group 8A elements ____
are unreactive and are rarely found in combination with other elements
Which of following elements is a metal?
which is nonmetal?
Which of the following elements is a metalloid?
characteristic of nonmetals?
low melting points
which is noble gas?
The elements lithium, sodium, and potassium _____
are in the same group
The elements sodium, magnesium, and silicon _______
are in the same period of elements
Which element would have physical and chemical properties similar to chlorine?
all of the following will lead to a homogenous mixture EXCEPT
a. vinegar and water
b. sugar and coffee
c. salt and water
d. mud and water
e. ice tea and lemonade
mud and water
How are gases different from solids and liquids?
Gases are compressible
What is true ab matter?
In both solids and liquids, the atoms or molecules pack closely to one another
Identify characteristics of a gas
no definite shape and no definite volume
a substance that can't be chemically broken down into simpler substances is
a substance composed of two or more elements in a fixed, definite proportion is
Two or more substances in variable proportions, where the composition is constant throughout are
a homogenous mixture
Two or more substances in variable properties, where the composition is variable throughout are
identify description of atom
protons and neutrons located in nucleus and electrons are in orbitals
identify charges of protons, neutrons, electrons
identify the metalloid
semiconductors are located in the periodic table
line dividing metals from nonmetals in the table
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