NEW
Font size
WorksheetsReview for Summative Exam (Physical Science)
Total questions: 20
Worksheet time: 10mins
It is an electrically neutral subatomic particle.
proton
electron
positron
neutron
Refers to the sum of the protons and and neutrons in an atom.
atomic mass
atomic number
isotope
electronegativity
What term is given to the process in which the fusion of protons ultimately leads to the formation of a Helium-4 nucleus?
helium burning
hydrogen burning
neutron burning
proton burning
Which of the following pairs of elements would most likely form an ionic compound?
Al and K
Cl and I
K and I
Mg and Al
A covalent bond with uneven sharing of the electrons is called a/ an
ionic
polar
nonpolar
metallic
What term is given to the measure of the ability of an atom of an element to attract electrons to itself?
atomic radii
electronegativity
ionic charge
metallic property
If the difference in electronegativity between two atoms is more than 1.7 the bond is
polar
nonpolar
ionic
metallic
Helium atoms do not combine to He2 molecules. But He atoms weakly attract another through ______.
dipole-dipole forces
London dispersion forces
hydrogen bonding
ion-dipole forces
Which of the following has correct order of intermolecular forces in increasing attraction?
ion-ion < dipole-dipole < ion-dipole < london dispersion < hydrogen bonding
london dispersion < ion-dipole < dipole-dipole < hydrogen bonding < ion-ion
london dispersion < dipole-dipole < hydrogen bonding < ion-dipole < ion-ion
dipole-dipole < ion-dipole < hydrogen bonding < london dispersion < ion-ion
What kind of organic compound contains C,H,O,N?
protein
lipids
nucleic acids
carbohydrates
Which of the following is the linkage between amino acids to create polypeptide chain of proteins?
ester bond
glycosidic bond
phosphodiester bond
peptide bond
What process occurs in breaking down bonds of polymers to produce monomers?
hydrolysis
condensation reactions
dehydration synthesis
monomer recombination
Which is NOT a factor that affect the rate of reaction?
temperature
concentration
solubility
particle size
What would the increase of temperature can do to the rate of chemical reaction?
Slow collision frequency
Not affect the rate of reaction
Allow less effective collision particles
Makes particles collide more, thus increases the rate of reaction
Which of the following is TRUE about catalysts?
They lower the activation energy of the reaction.
They increase the free energy of the reaction.
They are the reacting molecules that become products.
They are the reacting molecules that become products.
Which of the following is true about the limiting reactant?
It is added in excess.
It gives a larger amount of product.
It is depleted after the reaction.
It determines the amount of product that will be formed.
If a student calculates the maximum amount of product that can be obtained in a chemical reaction, he or she is determining the ________.
actual yield
theoretical yield
excess reactant
limiting reactant
It is a nonrenewable source of energy formed from buried dead organisms that decayed under extreme temperature and pressure.
geothermal energy
hydrothermal energy
methane gas
fossil fuels
Biomass is created by taking organic matter and burning it for energy. Which is NOT a source of biomass for energy?
biogenic materials
agricultural crops
wood and wood processing wastes
glass, acrylics, and plastics
Which of the following is always TRUE about active ingredients?
They are the cause of health risks of products.
They constitute the large percentage of a product.
They are more hazardous that inactive ingredients.
They dictate the efficacy of the product for its intended purpose.
