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WorksheetsPS Semester 1 Final Review
Total questions: 32
Worksheet time: 21mins
How are science and technology related?
technology is a branch of natural science
science is a branch of technology
advances in science may lead to advances in technology and vice versa
science and technology are not related
Which of the following is a characteristic of a mixture?
has varying properties
has a fixed composition
contains only pure substances
is the same as an element
Which of the following is malleable?
glass
pottery
ice
gold
Which of the following has the highest viscosity?
corn syrup
milk
water
orange juice
A substance has a melting point of 0° C and a boiling point of 100° C. The substance is most likely
water
hydrogen
gold
table salt
Which of the following is a chemical change?
ice melting
ice being carved
water boiling
water breaking down into hydrogen and oxygen
Forces of attraction limit the motion of particles most in
a solid
a liquid
a gas
an atom
The temperature and volume in a closed container of gas remain constant. If the number of particles of gas is increased, the gas pressure will
increase
decrease
remain constant
cause a decrease in the average kinetic energy of the particles
Rutherford's gold foil experiment provided evidence for which of the following statements?
Negative and positive charges are spread evenly throughout an atom
Alpha particles have a positive charge
Gold is not as dense as previously thought
There is a dense, positively charged mass in the center of an atom
The number of protons in one atom of an element is that element's
mass number
atomic number
isotope
balanced charge
Which statement is true about oxygen-17 and oxygen-18?
They do not have the same number of protons.
Their atoms have an identical mass.
They are isotopes of oxygen.
They have the same mass number.
In Niels Bohr's model of the atom, electrons move
like balls rolling down a hill
like planets orbiting the sun
like popcorn in a popcorn popper
like beach balls on water waves
Which statement accurately represents the arrangement of electrons in Bohr's atomic model?
Electrons vibrate in fixed locations around the nucleus.
Electrons travel around the nucleus in fixed energy levels with energies that vary from level to level
Electrons travel around the nucleus in fixed energy levels with equal amounts of energy
Electrons travel randomly in the relatively large space outside the nucleus
Moving from left to right across a row of the periodic table, which of the following values increases by exactly one from element to element?
isotope number
atomic number
mass number
atomic mass unit
Which general statement does NOT apply to metals?
Most metals are ductile
Most metals are malleable
Most metals are brittle
Most metals are good conductors of electric current
Group 7A of the periodic table contains the
most reactive nonmetals
least reactive metals
most reactive metals
least reactive nonmetals
Atoms of the most reactive elements tend to have
one or seven valence electrons
eight valence electrons
four or five valence electrons
no valence electrons
Compared with Group 3A elements, Group 5A elements have
more isotopes
more valence electrons
fewer valence electrons
more atoms in the ground state
Which of the following formulas represents a compound whose molecules contain a triple bond?
N ≡ N
O = O
O3
SO3
In a covalent bond,
two atoms share one or more pairs of electrons
electrons are transferred between atoms
a cation is bonded to an anion
electrons are not shared between atoms
Which of the following is an advantage of using nuclear power plants to produce energy?
Nuclear power plants do not pollute the air
Nuclear power plants produce wastes that are easy to dispose of
Nuclear power plants produce more stable wastes compared to fossil fuel combustion
Nuclear power plants use coal
In which of the substances in the picture are the forces of attraction among particles so weak that they can be ignored under ordinary circumstances?
Substance A
Substance B
Substance C
All three substances
The figure shows a blank periodic table. Identify the segments labeled A and B.
A and B are periods
A is a period and B is a group
A and B are both groups
A is a group and B is a period
An experiment with only one variable, the manipulated variable, is changed at a time is called a(n)
(a)
If a spoon gets hot quickly when it is used to stir a pot of soup, it is probably made of
(a)
If element Q has 11 protons, its atomic (a) is 11.
The pattern of repeating properties of elements in the periodic table is known as the
(a)
The two most reactive groups of elements in the periodic table are the alkali metals and the (a)
In an experiment, 44 g of propane was burned, producing 132 g of carbon dioxide and 72 g of water. The mass of oxygen that was needed for the reaction was (a) g
If an atom has 32 protons and 39 neutrons, what is its mass number?
(a)
Most calcium atoms have an atomic number of 20 and a mass number of 40, but some calcium atoms have a mass number of 48. What word could you use to describe these two kinds of calcium atoms?
(a)
Among the alkaline earth metals in Group 2A, which is more reactive - beryllium (element 4) or strontium (element 38)?
(a)
