GENERAL CHEMISTRY PRACTICE EXAM
Quiz by Paul Mark Yap
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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