C165 WGU Exam A+ Pass (verified)
Physical Change - Answers -✔✔ when matter changes in appearance without changing
in chemical composition
Chemical Change - Answers -✔✔ results in a change in chemical composition, occurs
when chemical bonds are formed or broken in a process called chemical reaction
In a solid what are the particles doing. - Answers -✔✔ vibrate in place
In a liquid what are the particles doing? - Answers -✔✔ able to slide past one another
What happens when an atom loses electrons? - Answers -✔✔ its net charge becomes
positive
What happens when an atom gains electrons? - Answers -✔✔ its net charge becomes
negative
Reactants - Answers -✔✔ the substances present at the beginning of a chemical
reaction
Products - Answers -✔✔ the substances that are formed by the chemical change
Ion - Answers -✔✔ only forms when electrons are transferred from one atom to another
or when electrons are left behind during a chemical reaction
Ionic Bonding - Answers -✔✔ a type of chemical bond that involves the electrostatic
attraction between oppositely charged ions
Ionic compound - Answers -✔✔ forms when electrons are transferred from a metal to a
nonmetal, the ratio elements are always the same
Ionic bond - Answers -✔✔ electrons are transferred from one atom to another
covalent bond - Answers -✔✔ forms when electrons are shared between atoms
The horizontal rows on the periodic table are called - Answers -✔✔ periods
The vertical columns on the periodic table are called - Answers -✔✔ groups
Elements in the same group have - Answers -✔✔ similar properties
Metals - Answers -✔✔ tend to lose electrons, are good conductors of electricity
, nonmetals - Answers -✔✔ have electrons that are very tightly associated with the
nucleus, tend to be brittle
nonmetals - Answers -✔✔ Elements that are poor conductors of heat and electric
current
metalloids - Answers -✔✔ has an intermediate electrical conductivity, shinny and brittle
Law of Conservation of Energy - Answers -✔✔ the law that states that energy cannot be
created or destroyed but can be changed from one form to another
Law if conservation of matter - Answers -✔✔ the law that states that matter cannot be
created or destroyed, but it can be converted from one form to another through physical
or chemical changes
Total mass of matter and the type of chemical present - Answers -✔✔ do not change
when matter undergoes a physical change but the volume can change
what does the law of conservation of matter apply to? - Answers -✔✔ It applies to both
physical and chemical changes. In a chemical reaction the mass of the products is
always the same as the mass of reactants.
Thermal energy for a gas - Answers -✔✔ the thermal energy is the total Kinetic energy
of all the particles that make up the gas
Thermal energy for a solid or liquid - Answers -✔✔ the thermal energy includes both
kinetic energy and any potential energy from the interacting particles.
Thermal energy is related to temperature, but it is _____ the same as temperature. -
Answers -✔✔ Not
Measuring temperature - Answers -✔✔ the sample size does not matter because
temperature is the average kinetic energy per particle
Measuring thermal energy - Answers -✔✔ the sample size does matter
heat - Answers -✔✔ Thermal energy that is transferred from one substance to another
Phase change - Answers -✔✔ a change from one state (solid or liquid or gas) to
another without a change in chemical composition
Evaporation - Answers -✔✔ Liquid to gas
Physical Change - Answers -✔✔ when matter changes in appearance without changing
in chemical composition
Chemical Change - Answers -✔✔ results in a change in chemical composition, occurs
when chemical bonds are formed or broken in a process called chemical reaction
In a solid what are the particles doing. - Answers -✔✔ vibrate in place
In a liquid what are the particles doing? - Answers -✔✔ able to slide past one another
What happens when an atom loses electrons? - Answers -✔✔ its net charge becomes
positive
What happens when an atom gains electrons? - Answers -✔✔ its net charge becomes
negative
Reactants - Answers -✔✔ the substances present at the beginning of a chemical
reaction
Products - Answers -✔✔ the substances that are formed by the chemical change
Ion - Answers -✔✔ only forms when electrons are transferred from one atom to another
or when electrons are left behind during a chemical reaction
Ionic Bonding - Answers -✔✔ a type of chemical bond that involves the electrostatic
attraction between oppositely charged ions
Ionic compound - Answers -✔✔ forms when electrons are transferred from a metal to a
nonmetal, the ratio elements are always the same
Ionic bond - Answers -✔✔ electrons are transferred from one atom to another
covalent bond - Answers -✔✔ forms when electrons are shared between atoms
The horizontal rows on the periodic table are called - Answers -✔✔ periods
The vertical columns on the periodic table are called - Answers -✔✔ groups
Elements in the same group have - Answers -✔✔ similar properties
Metals - Answers -✔✔ tend to lose electrons, are good conductors of electricity
, nonmetals - Answers -✔✔ have electrons that are very tightly associated with the
nucleus, tend to be brittle
nonmetals - Answers -✔✔ Elements that are poor conductors of heat and electric
current
metalloids - Answers -✔✔ has an intermediate electrical conductivity, shinny and brittle
Law of Conservation of Energy - Answers -✔✔ the law that states that energy cannot be
created or destroyed but can be changed from one form to another
Law if conservation of matter - Answers -✔✔ the law that states that matter cannot be
created or destroyed, but it can be converted from one form to another through physical
or chemical changes
Total mass of matter and the type of chemical present - Answers -✔✔ do not change
when matter undergoes a physical change but the volume can change
what does the law of conservation of matter apply to? - Answers -✔✔ It applies to both
physical and chemical changes. In a chemical reaction the mass of the products is
always the same as the mass of reactants.
Thermal energy for a gas - Answers -✔✔ the thermal energy is the total Kinetic energy
of all the particles that make up the gas
Thermal energy for a solid or liquid - Answers -✔✔ the thermal energy includes both
kinetic energy and any potential energy from the interacting particles.
Thermal energy is related to temperature, but it is _____ the same as temperature. -
Answers -✔✔ Not
Measuring temperature - Answers -✔✔ the sample size does not matter because
temperature is the average kinetic energy per particle
Measuring thermal energy - Answers -✔✔ the sample size does matter
heat - Answers -✔✔ Thermal energy that is transferred from one substance to another
Phase change - Answers -✔✔ a change from one state (solid or liquid or gas) to
another without a change in chemical composition
Evaporation - Answers -✔✔ Liquid to gas
