Teas 7 Chemistry Exam (Latest Update) Questions and
Verified Answers| 100% Correct| Grade A+
What is an example of Diffusion? - answer-For example, when you add a drop of food coloring to water,
immediately, the food coloring begins to spread (or diffuse) throughout the water, eventually reaching
equilibrium where all areas have the same concentration of coloring:
What is a concentration gradient? - answer-difference in the concentration of a substance from one
location to another
What is Kinetic Energy? - answer-the energy an object has due to its motion.
An example of kinetic energy is - answer-running water
KCl is an example of which type of bond? - answer-ionic
What is an ionic compound? - answer-Ionic compounds are compounds made up of ions that form
charged particles when an atom (or group of atoms) gains or loses electrons. A cation is an ion charged
positively; an anion is an ion charged negatively.
What is an ionic bond? - answer-Formed when one or more electrons are transferred from one atom to
another.
Which of the following is exchanged between two or more atoms that undergo ionic bonding? - answer-
Valence electrons
What is an ion? - answer-Ions are formed when an atom gains or loses electrons
What is a negative ion? - answer-A negative ion is created when an atom gains electrons. Electrons have
a negative charge.
What is a positive ion? - answer-A positive ion is created when an atom loses electrons. Electrons have a
negative charge.
, What is a chemical bound? - answer-1. Atoms of the same element may bond together to form
molecules or crystalline solids.
2. involves atoms combining to form chemical compounds and bring stability to the resulting product. I
What is a valence electrons? - answer-electrons in the outermost shell
How do you find the number of protons? - answer-Look at the atomic number it is the same.
How do you find the number of electrons? - answer-same as the number of protons.
How to find the number of neutrons in an atom? - answer-To find the number of neutrons, you will need
to subtract the atomic number from the atomic mass. Remember that the atomic number is the same as
the number of protons, which you have already identified
Where can I find the atomic number of an element? - answer-The atomic number is located above the
element symbol.
Where can I find the atomic mass of an element? - answer-The atomic mass can be found underneath
the symbol for the element.
What is an electrical charge? - answer-For example, if we have an object made up of 14 protons, which
are positive, and 12 electrons, which are negative, then we end up with a net charge of positive 2. We
simply add 1 for each proton and subtract 1 for each electron. If the resulting number is positive, we
have a net positive charge and if the resulting number is negative, we'll have a net negative charge. Note
that neutral particles will make no difference in the net charge.
What does combustion produce? - answer-energy, carbon dioxide, and water
Covalent bonds - answer-are in many biological compounds, including lipids and carbohydrates.
Verified Answers| 100% Correct| Grade A+
What is an example of Diffusion? - answer-For example, when you add a drop of food coloring to water,
immediately, the food coloring begins to spread (or diffuse) throughout the water, eventually reaching
equilibrium where all areas have the same concentration of coloring:
What is a concentration gradient? - answer-difference in the concentration of a substance from one
location to another
What is Kinetic Energy? - answer-the energy an object has due to its motion.
An example of kinetic energy is - answer-running water
KCl is an example of which type of bond? - answer-ionic
What is an ionic compound? - answer-Ionic compounds are compounds made up of ions that form
charged particles when an atom (or group of atoms) gains or loses electrons. A cation is an ion charged
positively; an anion is an ion charged negatively.
What is an ionic bond? - answer-Formed when one or more electrons are transferred from one atom to
another.
Which of the following is exchanged between two or more atoms that undergo ionic bonding? - answer-
Valence electrons
What is an ion? - answer-Ions are formed when an atom gains or loses electrons
What is a negative ion? - answer-A negative ion is created when an atom gains electrons. Electrons have
a negative charge.
What is a positive ion? - answer-A positive ion is created when an atom loses electrons. Electrons have a
negative charge.
, What is a chemical bound? - answer-1. Atoms of the same element may bond together to form
molecules or crystalline solids.
2. involves atoms combining to form chemical compounds and bring stability to the resulting product. I
What is a valence electrons? - answer-electrons in the outermost shell
How do you find the number of protons? - answer-Look at the atomic number it is the same.
How do you find the number of electrons? - answer-same as the number of protons.
How to find the number of neutrons in an atom? - answer-To find the number of neutrons, you will need
to subtract the atomic number from the atomic mass. Remember that the atomic number is the same as
the number of protons, which you have already identified
Where can I find the atomic number of an element? - answer-The atomic number is located above the
element symbol.
Where can I find the atomic mass of an element? - answer-The atomic mass can be found underneath
the symbol for the element.
What is an electrical charge? - answer-For example, if we have an object made up of 14 protons, which
are positive, and 12 electrons, which are negative, then we end up with a net charge of positive 2. We
simply add 1 for each proton and subtract 1 for each electron. If the resulting number is positive, we
have a net positive charge and if the resulting number is negative, we'll have a net negative charge. Note
that neutral particles will make no difference in the net charge.
What does combustion produce? - answer-energy, carbon dioxide, and water
Covalent bonds - answer-are in many biological compounds, including lipids and carbohydrates.
