PHYSICAL SCIENCE END TERM EXAM SAMPLE. SAMPLE
EXAM REVISION PRACTICE QUESTIONS WITH CORRECT
ANSWERS (2024 UPDATE)
Homogeneous mixture - ANSWER- A mixture in which substances are evenly distributed
throughout the mixture
Colloid - ANSWER- A mixture containing small, undissolved particles that do not settle out.
Tyndall effect - ANSWER- Scattering of a light beam as it passes through a colloid
Heterogeneous mixture - ANSWER- A mixture in which different materials can be
distinguished easily
Solution - ANSWER- A homogeneous mixture of two or more substances
Suspension - ANSWER- A mixture in which particles can be seen and easily separated by
settling or filtration
Density - ANSWER- mass/volume
Neutrons - ANSWER- no charge
Nuclear fission - ANSWER- A nuclear reaction in which a massive nucleus splits into smaller
nuclei with the simultaneous release of energy
Nuclear fusion - ANSWER- a nuclear reaction in which atomic nuclei of low atomic number
fuse to form a heavier nucleus with the release of energy.
, Radioactive - ANSWER- A spontaneous process in which unstable nuclei lose energy by
emitting radiation
Alpha radiation - ANSWER- Radiation that is made up of alpha particles; is deflected toward
a negatively charged plate when radiation from a radioactive source is directed between two
electrically charged plates
Beta radiation - ANSWER- Radiation that is made up of beta particles; is deflected toward a
positively charged plate when radiation from a radioactive source is directed between two
electrically charged plates
Gamma radiation - ANSWER- a type of nuclear radiation made of high-energy waves
Metals - ANSWER- Elements that are good conductors of electric current and heat.
Located left side of periodic table
Non metals - ANSWER- Low conductivity, not ductile, not malleable, brittle, dull, gas at room
temp
Located right side of table
Metalloid - ANSWER- Elements that have features of both metals and non-metals
Covalent bond - ANSWER- A chemical bond that involves sharing a pair of electrons between
atoms in a molecule
Ionic bond - ANSWER- Formed when one or more electrons are transferred from one atom to
another
EXAM REVISION PRACTICE QUESTIONS WITH CORRECT
ANSWERS (2024 UPDATE)
Homogeneous mixture - ANSWER- A mixture in which substances are evenly distributed
throughout the mixture
Colloid - ANSWER- A mixture containing small, undissolved particles that do not settle out.
Tyndall effect - ANSWER- Scattering of a light beam as it passes through a colloid
Heterogeneous mixture - ANSWER- A mixture in which different materials can be
distinguished easily
Solution - ANSWER- A homogeneous mixture of two or more substances
Suspension - ANSWER- A mixture in which particles can be seen and easily separated by
settling or filtration
Density - ANSWER- mass/volume
Neutrons - ANSWER- no charge
Nuclear fission - ANSWER- A nuclear reaction in which a massive nucleus splits into smaller
nuclei with the simultaneous release of energy
Nuclear fusion - ANSWER- a nuclear reaction in which atomic nuclei of low atomic number
fuse to form a heavier nucleus with the release of energy.
, Radioactive - ANSWER- A spontaneous process in which unstable nuclei lose energy by
emitting radiation
Alpha radiation - ANSWER- Radiation that is made up of alpha particles; is deflected toward
a negatively charged plate when radiation from a radioactive source is directed between two
electrically charged plates
Beta radiation - ANSWER- Radiation that is made up of beta particles; is deflected toward a
positively charged plate when radiation from a radioactive source is directed between two
electrically charged plates
Gamma radiation - ANSWER- a type of nuclear radiation made of high-energy waves
Metals - ANSWER- Elements that are good conductors of electric current and heat.
Located left side of periodic table
Non metals - ANSWER- Low conductivity, not ductile, not malleable, brittle, dull, gas at room
temp
Located right side of table
Metalloid - ANSWER- Elements that have features of both metals and non-metals
Covalent bond - ANSWER- A chemical bond that involves sharing a pair of electrons between
atoms in a molecule
Ionic bond - ANSWER- Formed when one or more electrons are transferred from one atom to
another
