Chemistry 101 Chapters 1-4 Review Exam with Updated Questions and Answers 100% A+ Graded

Chemistry 101 Chapters 1-4 Review Exam with Updated Questions and Answers 100% A+ Graded K = °C + 273.15 - CORRECT ANSWER-Conversion to kelvin from celcius Exa- - CORRECT ANSWER-Symbol: E; 10¹⁸ Peta- - CORRECT ANSWER-Symbol: P; 10¹⁵ Tera- - CORRECT ANSWER-Symbol: T; 10¹² Giga- - CORRECT ANSWER-Symbol: G; 10⁹ Mega- - CORRECT ANSWER-Symbol: M; 10⁶ Kilo- - CORRECT ANSWER-Symbol: k; 10³ Deci- - CORRECT ANSWER-Symbol: d; 10⁻¹ Centi- - CORRECT ANSWER-Symbol: c; 10⁻² Milli- - CORRECT ANSWER-Symbol: m; 10⁻³ Micro- - CORRECT ANSWER-Symbol: mew; 10⁻⁶ Nano- - CORRECT ANSWER-Symbol: n; 10⁻⁹ Pico- - CORRECT ANSWER-Symbol: p; 10⁻¹² Femto- - CORRECT ANSWER-Symbol: f; 10⁻¹⁵ Atto- - CORRECT ANSWER-Symbol: a; 10⁻¹⁸ Significant Figures Rules - CORRECT ANSWER-1) All nonzero digits are significant (not true; can be broken up into subatmoic particles [protons, neutrons, & electrons]) 2) Interior zeroes (zeroes between 2 non-zero digits) are significant (not true because of isotopes) 3) Leading zeroes (zeroes to the left of the first non-zero digit) are not significant 4) Trailing zeroes (zeroes at the end of a number) are categorized as follows: -Trailing zeroes after a decimal point are always significant -Trailing zeroes before a decimal point (and after a non-zero number) are always significant -Trailing zeroes before an implied decimal point are ambiguous and should be avoided by using scientific notation Dalton's Atomic Theory - CORRECT ANSWER-1) Each element is composed of tiny, indestructible particles called atoms 2) All stoms of a given element have the same mass and other properties that distinguish them from the atoms of other elements 3) Atoms combine in simple, whole-number ratios to form compounds 4) Atoms of one element cannot change into atoms of another element. In a chemical reaction, atoms only change the way that they are bound together with other atoms Precision - CORRECT ANSWER-How reproducible; how close the measurements are to each other Accuracy - CORRECT ANSWER-How close the measurements are to the true value Multiplication and Division with Sig Figs - CORRECT ANSWER-Always use the amount of sig figs that are in the number with the lowest amount of sig figs Ex. 4.56cm x 1.4cm = 6.4cm squared (2 sig figs from 1.4cm) Addition and Subtraction with Sig Figs - CORRECT ANSWER-Always use the same amount of sig figs as the number with the smallest amount of decimal places Ex. 12.11cm + 18.0cm + 1.013cm = 31.1cm (1 decimal place from 18.0cm)