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WorksheetsGeneral Chemistry 1-SUMMATIVE TEST 1
Total questions: 50
Worksheet time: 25mins
Which of the following is a physical property of matter?
Water at liquid temperature
Gasoline is flammable
Burning a paper
Observing the color of gold
Which of the following is an intensive property of matter?
The height of the cabinet is 250 cm
Diamond is the hardest of all minerals
The density of water is 1.0 g/cm3
The volume of large bottles of soda drinks is 1000 ml
What technique is applicable to separate the components of blood?
Filtration
Centrifugation
Distillation
Decantation
What technique can be used to produce salt from seawater?
Evaporation
Crystallization
Chromatography
Sublimation
What technique can be used to separate iron filings from sand?
Magnetism
Filtration
Decantation
Distillation
How can coarse flour particles be separated from fine flour?
Sifting
Centrifugation
Crystallization
Sublimation
What do you call the property of a substance to interact with another substance and form one or more new substances?
color
conductivity
flammability
reactivity
Based on the properties of the components of a sodium chloride solution, which separating method is most applicable?
Chromatography
Distillation
Decantation
Filtration
What is the basis for separating mixtures through chromatography?
The substances’ ability to form gas
The substances’ abilities to pass through fine pores
The substances’ abilities to be attracted to magnets
The substances’ different abilities to adhere to the surface of solids
Which of the following is the correct sequence of steps to separate a mixture of salt and sand?
I. Filter the sand with a filter paper. Set aside.
II. Add water to the salt and sand mixture to dissolve the salt.
III. Pure water is condensed and collected in the receiving flask.
IV. In the distillation apparatus, boil the remaining salt solution to vaporize the water.
V. After water has been boiled away, pure salt remains.
A. II, I, III, IV, V
B. II, III, IV, V, I
C. II, V, III, I, IV
D. II, I, IV, III, V
What is this subatomic particle that has negative charge?
proton
electron
neutron
megatron
An atom has an atomic number of 11 and an atomic mass of 23. Which of the following statements is correct?
It has 11 protons and 11 neutrons.
It has 11 electrons and 12 protons.
It has 11 protons and 11 electrons.
It has 23 protons and 11 electrons.
What is the atomic mass of an atom with 32 protons and 31 neutrons?
31
32
61
63
It involves the separating a liquid from a solid by gently pouring off a liquid.
Evaporation
Distillation
l
decantation
separating funnel
____ is the ability to be pressed, hammered or rolled into various shapes and sizes without breaking.
Elasticity
Strength
Hardness
Malleability
What property is applicable in Boiling point of water?
Intensive Property
Extensive Property
Physical Property
Chemical Property
Determine the property:
Volume of aqueous Copper sulfate
Intensive Property
Extensive Property
Physical Property
Chemical Property
Determine the property:
Number of moles of an unknown sample
Intensive Property
Extensive Property
Physical Property
Chemical Property
Determine the property:
Area of of the wire gauze
Intensive Property
Extensive Property
Physical Property
Chemical Property
Which property could NOT be used to distinguish between table salt and table sugar?
color
density
boiling point
melting point
INTENSIVE or EXTENSIVE
your weight on the moon.
(a)
A property that does NOT depend on the amount of the substance is called an (a) property
A property that does depend on the amount of a substance is an (a) property
When a substance contains more than one kind of particle it is called:
(a)
What is a homogeneous mixture?
a mixture that is the same throughout.
a mixture that is made up of one type of atom.
a mixture that is made up of one type of compound
a mixture that cannot be separated through physical changes
A method of separation in which a machine spins at high speeds to separate substance by their densities.
(a)
Which separation technique would be most effective to see what different pigments make up a black marker?
(a)
What is decantation?
Distillation
Desalination
Separating particles by careful pouring.
Measuring boiling points.
Which of the following best describes isotopes?
Isotopes have different numbers of neutrons.
Isotopes have different numbers of protons.
Isotopes are atoms of the same element with the same mass.
Isotopes have different numbers of electrons.
an atom with atomic number 6 would have how many protons
6
12
3
cannot be determined
How many neutrons in C-14?
6
7
8
9
What quantities vary between isotopes of an element?
protons, electrons, and atomic mass
protons, electrons, and atomic number
neutrons and electrons
neutrons and atomic mass
What do you call isotopes which can emit high-energy radiation?
Radioisotopes
Radio waves
Gamma Waves
Ultraviolet
Which of the following is used in smoke detectors?
Iodine-131
Uranium-238
Americium-241
Technecium-99
Which of the following is used in the detection of tumors?
Iodine-131
Uranium-238
Carbon-14
Technetium-99
Which of the following is used in carbon dating?
Carbon-12
Carbon-13
Carbon-14
Carbon-16
What does the number after the hyphen represent in Li-7?
Protons
Neutrons
Mass Number
Atomic Number
Boron consists of two isotopes, 105B and 115B, what accounts for the difference in the numbers after the hyphen?
B-10 has 5 protons while B-11 has 6 protons
B-10 has 10 protons while B-11 has 11 protons
B-10 has 5 neutrons while B-11 has 6 neutrons
B-10 has 10 neutrons while B-11 has 11 neutrons
How many neutrons does 2512Mg have?
12
13
25
27
What type of isotope that is used as radiation therapy to prevent
cancer.
(a)
What type of isotope that is used as radiation therapy to prevent
cancer.
(a)
What is the basis for separating the components of a mixture through distillation?
freezing point of the substances
room temperature
decaying period
boiling point of the substances
Which is not a separation technique?
Filtrating
Distillating
Evaporating
Dissolving
Which statement about atoms is FALSE?
Atoms contain subatomic particles
Atoms are the building blocks of matter
Atoms can be created and destroyed
Atoms can combine
"In a compound, the elements always present in the fixed ratio of their mass." is a ....
Law of constant proportion
Law of conservation of mass
Law of multiple proportion
None of the above
What is an element?
A pure substance that cannot be broken down.
Two atoms bonded together.
Two or more different types of atoms bonded together.
An molecule with an unequal distribution of charge.
What is the term for combining 2 or more atoms together?
atoms
elements
molecules
compounds
Why are atoms electrically neutral?
They have the same number of protons and neutrons which are both found in the nucleus.
They have the same number of protons and electrons which are both found outside the nucleus of atoms.
They have the same number of protons and electrons which are both found in the nucleus.
The number of protons inside the nucleus is equal to the number of electrons outside the nucleus of an atom.
Which of the subatomic particles is the lightest?
Electrons
Protons
Neutrons
Nucleus
Two atoms of the same element but with different mass numbers are called________
electrons
isotopes
variables
electron cloud
