Unlock document.
This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
Suppose 25 g of reactant A is mixed with 45 g of reactant B. After a chemical reaction
takes place between A and B, which statement is correct?
A) The total mass of products plus any unreacted reactants will be 70 g.
B) The total mass of products plus any unreacted reactants will be less than 70 g.
C) The total mass of products plus any unreacted reactants will be more than 70 g.
D) The total mass of products will be 70 g.
The element potassium should produce compounds most similar to those of
A) Tc.
B) Na.
C) Al.
D) Sr.
An atom that has equal amounts of protons and electrons is a ______________ ion.
A) neutral
B) positive
C) negative
D) polyatomic
The physical disintegration or fracturing of rock is called
A) mechanical weathering.
B) gradation.
C) chemical weathering.
D) none of these.
The nucleus makes up about what percentage of the mass of an atom?
A) 99.9%
B) 50%
C) 90%
D) 5%
The direction of the magnetic field of a bar magnet is
A) in the direction opposite to that in which a compass would point.
B) in any direction.
C) toward the south pole.
D) toward the north pole.
The calculation of electron energy levels in the hydrogen atom was done first by
A) Schrdinger.
B) de Broglie.
C) Bohr.
D) Heisenberg.
The primary function of a moderator in a nuclear reactor is to
A) absorb neutrons.
B) cool the fuel rods.
C) slow down neutrons.
D) transfer heat.
Which of the following temperature scales has the smallest unit interval?
A) Celsius
B) Kelvin
C) Fahrenheit
D) None of these
What type of faulting results from stresses parallel to the fault plane?
A) Reverse
B) Normal
C) Abnormal
D) Strike-slip
What is the formula of a compound formed from the ions M3+ and X3-?
A) M2X
B) MX
C) M2X3
D) MX2
When sodium and chlorine react to form sodium chloride, an ionic compound,
A) each sodium atom gains two electrons.
B) each sodium atom gains one electron.
C) each chlorine atom gains one electron.
D) each chlorine atom gains two electrons.
About 80% of the mass of the atmosphere and most of the clouds and water vapor are
located in the
A) stratosphere.
B) troposphere.
C) mesosphere.
D) thermosphere.
A river's suspended load and bed load may accumulate at its mouth and form a(n)
A) delta.
B) flood plain.
C) moraine.
D) abyssal plain.
The three space coordinates that determine a star's position are the
A) celestial sphere, celestial prime meridian, and celestial equator.
B) zodiac, constellation, and star name.
C) distance, declination, and right ascension.
D) astronomical unit, parsec, and light-year.
The safest place in the home to seek shelter from a tornado is the
A) basement.
B) kitchen.
C) bedroom.
D) attic.
The Sun's photosphere is, by mass, about 75%
A) helium.
B) carbon.
C) hydrogen.
D) oxygen.
Which of the following types of radiation has the greatest ability to penetrate matter?
A) Gamma rays
B) Beta particles
C) Alpha particles
D) Protons
An object with a mass of 8 kg is dropped and takes 5 s to hit the ground. Then another
object with a mass of 16 kg is dropped from the same point. How long does it take to
hit the ground?
A) 5 s
B) 10 s
C) 3 s
D) 25 s
E) 125 s
The transitions of an electron in the hydrogen atom to the n = 2 level result in the
A) Lyman series.
B) Balmer series.
C) Paschen series.
D) Bohr series.
Which type of reaction is AlCl3+ 3KOH Al(OH)3+ 3KCl?
A) Single-replacement
B) Double-replacement
C) Decomposition
D) Combination
Which of the following is not a scalar quantity?
A) Kinetic energy
B) Potential energy
C) Power
D) Work
E) None of these; that is, they are all scalar quantities.
Which of the following was not a part of Dalton's atomic theory?
A) Each element is composed of atoms, which are identical for that element.
B) The reactivity of elements involves changes in their electron configuration.
C) Chemical combination is the bonding of a definite number of atoms of each of the
combining elements.
D) No atoms are gained, lost, or changed in identity during a chemical reaction.
Which is the formula for baking soda?
A) NaHCO3
B) NaOH
C) (NH4)2 SO4
D) HC2H3O2
When the equation Al + O2Al2O3 is balanced, the coefficient of Al is
A) 1
B) 2
C) 3
D) 4
Which of the following statements is not true of glaciers?
A) They cause little erosion.
B) They are made of ice.
C) They form when more snow falls than melts.
D) They flow.
A(n) ______________ image is defined as one that cannot be brought to a focus on a
screen.
A) virtual
B) real
C) upright
D) inverted
The potential energy of a pendulum is greatest
A) when its potential energy is least.
B) at the top of its swing.
C) at the bottom of its swing.
D) when its total energy is greatest.
What astronomer established the present system for classifying galaxies?
A) Henrietta Leavitt
B) Harlow Shapley
C) Edwin Hubble
D) Hipparchus
Which of the following Group 1A elements has the smallest atom?
A) Rb
B) Na
C) K
D) Li
The Grand Tetons are examples of which type of mountain?
A) Fold
B) Fault-block
C) Volcanic
D) None of these
When hydrogen, from Group 1A, unites with chlorine, it forms a(n) ______________
compound.
A) ionic
B) metallic
C) covalent
D) organic
Igneous rock that formed below Earth's surface by solidification of magma is known as
A) extrusive rock.
B) intrusive rock.
C) metamorphic rock.
D) silicate rock.
Earth's thin, rocky, outer layer on which we live is called the
A) seismosphere.
B) geosphere.
C) asthenosphere.
D) crust.
What is the formula of a compound formed from the ions M2+ and X2-?
A) M2X
B) MX
C) M2X2
D) MX2
Regional metamorphism causes a parallel arrangement of mineral grains that results in
a pronounced layering of the rock. The layering is known as _____________.
The kilowatt-hour is a unit of ______________.
The simplest member of the alkane series is named ______________.
A time zone is theoretically ______________ wide.
A transformer with 800 turns on the primary coil is used to decrease the voltage from
2000 V to 120 V for home use. How many turns should be in the secondary coil?
Complete and balance the equation: Al + HCl
Much of our energy comes from coal that was formed from plants that lived during the
______________ period.
The concept of the dual nature of light indicates that light acts sometimes like a(n)
______________ and sometimes like a(n) ______________.
An extremely large collection of stars bound together by gravitational attraction and
occupying a huge volume of space is called a(n) _______________.
A natural agent of chemical weathering that is enhanced by CO2 pollution is
______________.
The number of molecules in a container is tripled and the Kelvin temperature doubled.
The volume remains unchanged. The new pressure will be how many times greater than
the original pressure?
The number of daylight hours before 12 noon is approximately the ______________ as
the number after 12 noon.
The formula for the hydronium ion is ______________.
Igneous rocks are classified according to their silica content, or color, and their
__________.
Sounds with frequencies higher than the human ear can detect are in the
______________ range.
Rocks formed from consolidated sediment deposited in layers are known as
_____________ rocks.
The planet ______________ has the largest moon in the solar system.
