Chemistry Exam Review: Multiple Choice Problems Chapters 1 and 2
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A set of flashcards covering key concepts and multiple choice questions from the chemistry lecture on properties of matter, significant figures, atomic structure, and periodic table classifications.
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What characteristics describe the structure of a solid?
Particles are arranged in an organized, regular form.
Which of the following is NOT a pure substance?
The plastic wrapper around a candy bar.
How do the particles in a liquid behave?
The particles are close together but disorganized.
Which measurement has the largest number of significant figures?
0.50098 m.
Which element is most chemically similar to potassium?
Lithium.
What is NOT considered when calculating the atomic weight of an element?
The number of electrons in each isotope.
What is the period and group for aluminum?
Period 3, Group 3A.
When correctly rounded, what does 0.00566102 become?
0.0057.
How many protons and electrons are in potassium?
19 protons and 19 electrons.
How is the number 0.0990 expressed in scientific notation?
9.90 × 10^-2
What is the standard form of 1.250 × 10-2?
0.01250
Which measured value contains a zero that is NOT a significant figure?
0.984.
What does the atomic weight of lead represent?
It is the weighted average of the mass of all the naturally occurring isotopes of lead.
What is the proper electron-dot symbol for aluminum?
Al.
What do elements in the same column of the periodic table form?
A group.
Which example represents a chemical change?
The burning of gasoline in a car engine.
When rounded to three significant figures, what is 2.3390 × 10⁸?
2.34 × 10⁸.
How many dots does silicon have in its electron-dot symbol?
4.
How many protons, electrons, and neutrons does Boron-10 have?
5 protons, 5 electrons, and 5 neutrons.
Which particle does NOT reside in the nucleus of an atom?
Electrons.
Which element is a good conductor of heat and electricity and is malleable ?
Lithium (Li)
Which element is most likely to conduct electricity?
Nickel (Ni).
Which state of matter does NOT have a definite shape or volume?
Gas.
What is the chemical symbol for the noble gas in period 4?
Krypton (Kr).
Which quantity is an inexact number
50 meters
What is an example of physical change
The melting of snow
What is the chemical symbol for the halogen located in period 5
(I)
In which state are particles randomly arranged
Liquids and gases
Which of the following are properties in characteristics of metals
Are very good conductors of electricity
Select the orbital that has a dumbbell shape
P orbital
Which element is a nonmetal
More than one is a non metal
Which of the following chemical symbols does not represent a main group element?
Fe
Which quantity is an exact
8 boxes
Which number contains three significant figures
0.900
Which element is not an alkali metal
Cl
Which element contains 4 valence electrons
C
What is the chemical symbol for the element located in period 1 group a
He
What is the chemical symbol for the element located in group 4 period 3
Ge
Which element is a metal
More than one of the elements is a metal