WGU C REAL EXAM | 150 QUESTIONS AND ANSWERS ( VERIFIED ANSWERS )| AGRADED| BRAND NEW!!!

WGU C165 2023 -2024 REAL EXAM | 150 QUESTIONS AND ANSWERS ( VERIFIED ANSWERS )| AGRADED| BRAND NEW!!! What happens when an atom loses electrons? - ANSWER - its net charge becomes positive what happens when an atom gains electrons? - ANSWER - its net charge becomes negative Physical Change - ANSWER - when matter changes in appearance without changing in chemical composition Chemical Change - ANSWER - results in a change in chemical composition, occurs when chemical bonds are formed or bro ken in a process called chemical reaction In a solid what are the particles doing. - ANSWER - vibrate in place In a liquid what are the particles doing? - ANSWER - able to slide past one another reactants - ANSWER - the substances present at the beginning of a chemical reaction Products - ANSWER - the substances that are formed by the chemical change ion - ANSWER - only forms when electrons are transferred from one atom to another or when electrons are left behind during a chemical reaction Ionic Bonding - ANSWER - a type of chemical bond that involves the electrostatic attraction between oppositely charged ions Ionic compound - ANSWER - forms when electrons are transferred from a metal to a nonmeta l, the ratio elements are always the same Ionic bond - ANSWER - electrons are transferred from one atom to another covalent bond - ANSWER - forms when electrons are shared between atoms The horizontal rows on the periodic table are called - ANSWER - period s The vertical columns on the periodic table are called - ANSWER - groups Elements in the same group have - ANSWER - similar properties Metals - ANSWER - tend to lose electrons, are good conductors of electricity nonmetals - ANSWER - have electrons that ar e very tightly associated with the nucleus, tend to be brittle nonmetals - ANSWER - Elements that are poor conductors of heat and electric current metalloids - ANSWER - has an intermediate electrical conductivity, shinny and brittle Law of Conservation of Energy - ANSWER - 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 - ANSWER - 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 - ANSWER - do not change when matter undergoes a physical change but the volume can change what does the law of conservation of matter apply to? - ANSWER - 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 - ANSWER - the thermal energy is the total Kinetic energy of all the particles that make up the gas Thermal energy for a solid or liquid - ANSWER - 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. - ANSWER - Not Measuring temperature - ANSWER - the sample size does not matter because temperature is the average kinet ic energy per particle Measuring thermal energy - ANSWER - the sample size does matter heat - ANSWER - Thermal energy that is transferred from one substance to another Phase change - ANSWER - a change from one state (solid or liquid or gas) to another without a change in chemical composition Evaporation - ANSWER - Liquid to gas