WorksheetsSLAAP QUIZ NIGHT CHEMISTRY
Total questions: 20
Worksheet time: 8mins
When a chemist pours hot water with coffee extract to an ice, some of the coffee crystallizes. What kind of solution is formed?
Unsaturated
Saturated
Supersaturated
Diluted
Which of the following processes describes the formation of glycogen from excess glucose in the blood?
Ketogenesis
Lipogenesis
Glycogenesis
Gluconeogenesis
When a paper is crumpled, what physical, what physical property is altered?
Density
Shape
Mass
State
Hikers light a campfire at night to keep themselves warm. Lighting the campfire is an example of?
exothermic reaction which absorbs heat
exothermic reaction which releases heat
endothermic reaction which absorbs heat
endothermic reaction which releases heat
A substance that increases the rate of a chemical reaction without being used up in the process is called
electrolyte
catalyst
oxidant
indicator
Which of the following elements is the most electronegative?
N
C
F
O
Which of the following act as sources of energy in times of prolonged hunger and insulate the body against loss of heat?
Carbohydrates
Minerals
Proteins
Fats
Oxides of nonmetals with water form acids while oxides of metals with water form bases. Which of the following will be acidic in water?
Carbon dioxide
Calcium oxide
Barium oxide
Magnesium oxide
In NaCl, the bond between Na and Cl is
hydrogen
metallic
covalent
ionic
The combination of equivalent amounts of acids and bases is called
precipitation
neutralization
hydrolysis
ionization
A carcinogenic air pollutant from automotive sources and cigarette smoke is
aflatoxin
ammonia
urethane
benzopyrene
Which of the following is an acid?
C2H5OH
CH3OCH3
CH3CH2COOH
CH3COCH3
An example of a carbohydrate is
CHOOH
(C6H10O5)x
C5H5OH
CH4
Which one of the following processes is accompanied by a decrease in entropy?
sublimation of carbon dioxide
evaporation of water
freezing of water
shuffling a deck of cards
Isotopes of an element have different numbers of
protons
neutrons
electrons
positrons
Which particles are found in the nucleus of an atom?
protons and neutrons
neutrons and electrons
protons and electrons
protons
One of the most important properties of mixtures is that they
are very reactive and unstable
may have different proportions of their components
have fixed proportions of their components
can be separated only by chemical means
The electron configuration of a neutral atom of calcium is shown.
1s22s22p63s23p64s2
How many valence electrons are in the atom?
2
4
8
20
Which of the following terms used as a measure of the average kinetic energy of the particles in a sample?
temperature
chemical energy
volume
pressure
Which part of an atom is most directly involved in chemical bonding?
nucleus
electron
proton
neutron
