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GENERAL CHEMISTRY PRACTICE EXAM

Quiz by Paul Mark Yap

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16 questions
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  • Q1

    Observable or measurable properties without changing the composition of matter.

    Chemical Property

    Physical Change

    Extensive Property

    Qualitative Property

    Physical Property

    30s
  • Q2

    Which of the following is an example of an intensive property?

    Size

    Volume

    Entropy

    Concentration

    Heat Capacity

    30s
  • Q3

    Which of the following is not an example of a chemical change?

    Fireworks exploding

    Photosynthesis

    Cooking an egg

    Dry Ice Sublimes

    Metabolism

    30s
  • Q4

    Which of the following statements are true?

    Mixtures are divided into solutions and compounds

    An element is a mixture that cannot be broken down into a new substance by using some physical or chemical means.

    The atoms in compounds are regrouped to make new and different compounds in physical change

    All compounds consist of a fixed ratio of elements

    Pure substances are substances that are composed of two or more types of particles and has a continual structure.

    30s
  • Q5

    Which of the following is a homogeneous mixture?

    Water

    Diamond

    Steam

    Air

    Hydrochloric Acid

    30s
  • Q6

    A purification process where the components of a liquid mixture are vaporized and then condensed and isolated.

    Filtration

    Centrifugation

    Decantation

    Distillation

    Evaporation

    30s
  • Q7

    Refers to the liquid that we get after passing through the filter paper

    Residue

    Funnel

    Condensate

    Distillate

    Filtrate

    30s
  • Q8

    The phenomenon of water being able to rise up a narrow tube is called

    Enthalpy

    Capillary action

    Chromatography

    Entropy

    Decantation

    30s
  • Q9

    Which of the following statements are false?

    Electrons are small but contribute a lot in an element’s overall atomic mass due to its number in the electron shell

    The number of protons determines the identity of an atom or element in each sample of a substance

    The outermost regions of the atom are called electron shells and contain the electrons 

    Protons and neutrons have approximately the same mass, about 1 amu.

    The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge).

    30s
  • Q10

    An unknown substance has 15 protons. What is the substance?

    Sulfur

    Neon

    Argon

    Phosphorus

    Fluorine

    30s
  • Q11

    Approximately what is the atomic mass of Iron?

    52

    35

    70

    56

    48

    30s
  • Q12

    Protium, deuterium, and tritium are isotopes of hydrogen. What is the difference between these 3 isotopes?

    The number of protons found inside its nucleus.

    The number of neutrons found inside its nucleus.

    The number of protons and neutrons found inside its nucleus.

    The number of electrons found in its valence shell

    The number of electrons found inside its nucleus.

    30s
  • Q13

    How many neutrons are there in Carbon-14?

    6

    12

    20

    14

    8

    30s
  • Q14

    Which of the following is a radioactive isotope?

    Tritium (Hydrogen-3)

    Deuterium (Hydrogen-2)

    Carbon-12

    Sulfur-32

    Nitrogen-15

    30s
  • Q15

    An isotope used to kill microorganisms in food and extend the shelf life of this products and to collect evidence for or against a claimed wine vintage.

    Hydrogen- 3

    Cobalt -60

    Carbon-12

    Californium- 252

    Cesium – 137

    30s

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