Download Chem 1201 Final Exam with 100% Correct and Verified Answers 2024 and more Exams Advanced Education in PDF only on Docsity! Chem 1201 Final Exam With 100% Correct And Verified Answers 2024 Physical properties - Correct Answer-Can be observed without changing a substance into another substance Ex: Boiling point, density, mass, volume, etc Chemical properties - Correct Answer-Can only be observed when a substance is changed into another substance. Ex: Flammability, corrosiveness, reactivity with acid, etc Physical change - Correct Answer-Occurs when a substance changes shape, size or color. This change does not affect the overall composition of the substance Ex: Changes of state (s, l, g), grinding coffee, liquid evaporating, melting butter, cutting paper, freezing water, molding clay Chemical change - Correct Answer-This type of change results in new substances. Ex: Combustion, oxidation, decomposition, etc. Precision - Correct Answer-How closely the measurements agree with one another Accuracy - Correct Answer-How close the measurement is to the true value d = m/V - Correct Answer-What is the equation for density? atoms - Correct Answer-All matter is composed of tiny particles called ____. Nucleons - Correct Answer-Protons and neutrons are sometimes called ______. Isotopes - Correct Answer-___ are atoms of the same element with the same number or protons but different numbers of neutrons. Hence their mass numbers will be different. Mass number - Correct Answer-Total number of nucleons (protons and neutrons) Ions - Correct Answer-Charged atomic or molecular particles are called ___ and result from the gain or loss of electrons (only) from the particle. Cations - Correct Answer-Neutral atoms or molecules are turned into positively charged ions called ___ by removing one or more electrons. Anions - Correct Answer-Neutral atoms or molecules that gain extra electrons become negatively charged ions called ____. Chemical formula - Correct Answer-A notation that uses chemical symbols with numerical subscripts to convey the relative proportions of atoms of the different elements in a substance. Molecular - Correct Answer-____ compounds consist of molecules. These molecules are formed from nonmetals (and include hydrogen). Empirical formula - Correct Answer-Describes the simplest whole number ratio of atoms in a molecule, which makes up the molecular compound Metals - Correct Answer-___ (exception: NH4+) tend to form cations Nonmetals - Correct Answer-___ tend to form anions Ionic - Correct Answer-___ compounds involve the formation of cations and anions. Organic chemistry - Correct Answer-The study of compounds containing carbon Dissociation - Correct Answer-pre-formed ions in a solid move apart in solution Ionization - Correct Answer-neutral substance forms ions in solution dissociate - Correct Answer-When an ionic compound dissolves in water, the ions ____ and the ions are designated with (aq). Strong - Correct Answer-___ electrolytes exist in solution entirely as ions; some are: ionic compounds (salts dissolved in water), strong acids, and strong bases Weak - Correct Answer-___ electrolytes; some ionic compounds, weak acids and weak bases that partially dissociate (but still ionize) in solution. Non - Correct Answer-____electrolytes; (sugar) are molecular compounds i.e. there are NO IONS formed in solution Maxwell - Correct Answer-Developed a detailed understanding about the nature of light waves. His theory showed that light is an electromagnetic wave generated by an oscillation of an electric charge. Balmer - Correct Answer-Studied the different colors that salts produce in flames Planck - Correct Answer-Hypothesized that Energy must be emitted or absorbed in discrete packets or quanta, which means "fixed amount"
