Chm 1025 Study guides, Class notes & Summaries

Chemistry correct answers - The study of composition, structure, properties, and reactions of matter - Types: 1. General (definition above) 2. Organic (study of substances that involve carbon) 3. Biological (study of chemical reactions that take place in biological systems) 4. Physical (physical nature of chemical systems/ energy changes) 5. Geochemistry (chemical composition of ores, soils, and minerals of the surface of earth and other planets) Matter correct answers - All the su...

Which of the following setups would convert centimeters to feet? (2.54 cm=1 inch) correct answers 1 centimeter X 1 inch/2.54 centimeters X 1 foot/12 inches How would you classify raisin bran? correct answers Mixed-heterogeneous Which atom has the largest number of neutrons? a) phosphorus-30 b) chlorine-37 c) potassium-39 d) argon-40 e) calcium-40 correct answers d) argon-40 [40-18=22 neutrons] Select the false statements from the following i) Elements are arranged by increasing at...

What is the metric unit for length?Meter What is the metric unit for volume?Liter What is the metric unit for mass?Gram What is the metric unit for temperature?Degree Celcius What is the metric unit for time?Second What is the SI unit for length?Meter What is the SI unit for volume?cubic meter (m^3)

1 Cal=1 Kcal 1000 cal 4.184 kJ JJ Thomsondiscovered the electron, plum pudding model R.A. Millikandiscovered electron mass Oil drop experiment RutherfordDiscovered the nucleu

Scientific Notation and Exponential Notation Add, subtract, multiply, divide, and convert Significant Numbers Non-zero digits are always significant. Any zeros between two significant digits are significant. A final zero or trailing zeros in the decimal portion ONLY are significant. Space holding zeros on numbers less than one. the zero to the left of the decimal point on numbers less than one. Zero Type #3: trailing zeros in a whole number. SI International System of Units Metric Con...

pure substance correct answers matter with a fixed composition element correct answers matter made up of one type of material compound correct answers molecule containing atoms of two or more elements that are chemically combined in fixed proportions element symbols correct answers shorthand version of an elements formal name chemical formula correct answers describe the composition of a compound using element symbols to show the makeup and subscripts to indicate the proportions of t...

Scientific Notation and Exponential Notation correct answers Add, subtract, multiply, divide, and convert Significant Numbers correct answers Non-zero digits are always significant. Any zeros between two significant digits are significant. A final zero or trailing zeros in the decimal portion ONLY are significant. Space holding zeros on numbers less than one. the zero to the left of the decimal point on numbers less than one. Zero Type #3: trailing zeros in a whole number. SI correct ans...

Energy and heat capacity calculation correct answers Q(heat)=M(mass)*C(specific heat capacity)* T ( temperature change) Density correct answers D=M/V Specific gravity correct answers SG= D of substance(g/ml) / D of water(g/ml) Conversion from Kevin(K) to Celsius (C) correct answers K=C+273.15 Conversion from Fahrenheit(F) to Celsius(C) correct answers F=(C*1.8) +32 Conversion from Celsius (C) to Fahrenheit(F) correct answers C= F-32/1.8 Element correct answers Substance that ca...

Metals that form cations with different charges Transition metals Nonmetals that form anions with -1 charge. Diatomic elements Halogens Group of metals that forms actions with +1 charge Alkali Nonmetals that are not reactive Noble gases Elements with properties in between metals and nonmetals Metaloids Most are solid, have luster and conduct electricity very well Metals Group of metals that forms actions with +2 charge Alkaline earth