EXAM 2026 VERIFIED QUESTIONS AND
DETAILED SOLUTIONS
◉ gamma rays. Answer: Electromagnetic waves with the shortest
wavelengths and highest frequencies
◉ pitch. Answer: a tone's experienced highness or lowness; depends
on frequency
◉ Loudness. Answer: A physical response to the intensity of sound,
modified by physical factors
◉ Matter. Answer: Anything that has mass and takes up space
◉ Atom. Answer: Basic unit of matter
◉ Protron. Answer: partical that carries a positive charge
◉ Neutron. Answer: A small particle in the nucleus of the atom, with
no electrical charge
,◉ Electron. Answer: A subatomic particle that has a negative charge
◉ electron cloud. Answer: a region around the nucleus of an atom
where electrons are likely to be found
◉ valence electrons. Answer: Electrons on the outermost energy
level of an atom
◉ Element. Answer: A pure substance made of only one kind of atom
◉ atomic number. Answer: the number of protons in the nucleus of
an atom
◉ atomic symbol. Answer: An abbreviation for an element or atom
◉ Compound. Answer: A substance made up of atoms of two or
more different elements joined by chemical bonds
◉ chemical bond. Answer: the force that holds two atoms together
◉ Molecule. Answer: A group of atoms bonded together
◉ chemical. Answer: any substance that has a definite composition
, ◉ organic compounds. Answer: compounds that contain carbon and
hydrogen
◉ pure substance. Answer: A sample of matter, either a single
element or a single compound, that has definite chemical and
physical properties
◉ Mixture. Answer: A combination of two or more substances that
are not chemically combined
◉ heterogeneous mixture. Answer: A mixture in which different
materials can be distinguished easily
◉ homogeneous mixture. Answer: A mixture in which substances
are evenly distributed throughout the mixture
◉ alloy. Answer: A mixture of two or more metals
◉ soild. Answer: A state of matter that has a definite shape and
volume
◉ liquid. Answer: A state of matter that has no definite shape but
has a definite volume