- Study guides, Class notes & Summaries

is the study of matter and the changes that matter undergoes. - correct answers chemistry is anything that has mass and occupies space. - correct answers Matter is a form of matter that has definite composition and distinct properties - correct answers substance substances can be either ____ or ____ - correct answers elements or compounds a substance that cannot be separated into simpler substances by chemical means. - correct answers element contains 2 or more different atoms - c...

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10 pages

Written in 2025/2026

Grade A+

RealGrades

Mass (SI unit) - correct answers kilogram (kg) Length (SI unit) - correct answers meter (m) Temperature (SI unit) - correct answers Kelvin (K) Amount of substance (SI unit) - correct answers mole (mol) Time (SI unit) - correct answers Second Volume (SI unit) - correct answers cubic meter (m^3) Volume (metric system) - correct answers liter (L) Mass (metric system) - correct answers gram (g) Temperature (metric system) - correct answers Celsius (°C) Water Freezes (Fahr...

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3 pages

Written in 2025/2026

Grade A+

RealGrades

how to find density? - correct answers d = m(mass)/v(volume) kg/m^3 how to find volume? - correct answers v = mass/density how to find mass? - correct answers m = volume * density SI metric: length - correct answers meters SI metric: temperature - correct answers Kelvin SI metric: time - correct answers seconds SI metric: mass - correct answers kilograms Mega (M) mean? - correct answers 1 x 10^6 1,000,000 Kilo (k) mean? - correct answers 1 x 10^3 1,000 Deci (d) - ...

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14 pages

Written in 2025/2026

Grade A+

RealGrades

avagrado's number - correct answers 6.02x10^23 F°↔C° - correct answers F°x (5/9) -32, C°x (9/5) + 32 K→C° - correct answers C° + 273 Ionization Energy on periodic table... - correct answers increases from top to bottom, left to right ionization energy - correct answers energy needed to remove an electron from outer shell metals: ion charge and electron availability - correct answers Positive, lose electrons = cation nonmetals: ion charge and electron availability -...

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4 pages

Written in 2025/2026

Grade A+

RealGrades

Determine the number of significant figures in the measurement. Enter a NUMERICAL answer. 0.0350 grams - correct answers 3 Determine the number of significant figures in the measurement. Enter a NUMERICAL answer. 2.014 x 10⁻² meters - correct answers 4 Round 7.9445 to four (4) significant figures. - correct answers 7.946 Round 7.9445 to one significant figure - correct answers 8 Round 0.090625 to two significant figures. - correct answers 0.091 Choose all that apply regar...

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2 pages

Written in 2025/2026

Grade A+

RealGrades

Equation - correct answers C = 5/9(F - 32) Fahrenheit Equation - correct answers F = 9/5( C ) + 32 Kelvin Equation - correct answers K = C + 273 Metric Length - correct answers Millimeter, Centimeter, Meter, Kilometer Imperial Length - correct answers Inch, Foot, Yard, Mile Metric Mass - correct answers Milligram, gram, kilogram Imperial Mass - correct answers Ounce, Pound, Stone Metric Capacity - correct answers Milliliter, Centiliter, Liter Imperial Capacity - correct a...

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4 pages

Written in 2025/2026

Grade A+

RealGrades

which physical form of matter has a definite volume, but no definite shape? - correct answers Liquid is a physical form of matter that has a definite volume, but no definite shape. A solid has a definite volume and a definite shape and a gas has no definite volume or shape. what physical state of matter is associated the particles having least amount of thermal energy? - correct answers solid solids have the most rigidly packed particles (molecules, ions, or atoms) becaue they have the lowes...

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8 pages

Written in 2025/2026

Grade A+

RealGrades

Vacuoles may act as Select one: a. places to store reserves of important organic molecules b. all of these answers are correct c. sites of lipid biosynthesis d. sites of protein biosynthesis - correct answers A The molecules shown below are best described as Select one: a. Enantiomers b. Isotopes c. Geometric isomers d. Structural isomers - correct answers D Which of the following membrane activities do NOT require energy from ATP hydrolysis? Select one: a. all of these ans...

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11 pages

Written in 2025/2026

Grade A+

RealGrades

environmental science - correct answers systematic study of the environment and our place in it anthropocentrism - correct answers human flourishing should be valued; other species and ecological processes are secondary ecocentrism - correct answers the ecosystem as a whole should be valued conservation - correct answers expending resources for human use benefit the greatest number for the longest time preservation - correct answers maintaining nature for its own right inputs and...

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5 pages

Written in 2025/2026

Grade A+

RealGrades

A reaction has a ∆G of -5.6 kcal/mol. Which of the following would most likely be TRUE? - correct answers The reaction would result in an increase in entropy (S) and a decrease in the energy content (H) of the system. T is the temperature in Kelvin Which term precisely describes the cellular process of breaking down large molecules into smaller ones? - correct answers catabolism Which of the following statements is FALSE? - correct answers Hydrolysis of ATP to form ADP and inorganic pho...

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6 pages

Written in 2025/2026

Grade A+

RealGrades

Main chemical elements that compose Earth's atmosphere - correct answers Nitrogen Oxygen Argon Carbon dioxide Nitrogen percentage in Earth's atmosphere - correct answers 78.08% Oxygen percentage in Earth's atmosphere - correct answers 20.95% Argon percentage in Earth's atmosphere - correct answers 0.93% Carbon dioxide percentage in Earth's atmosphere - correct answers 0.038% Four main layers of Earth's atmosphere - correct answers Troposphere Stratosphere Me...

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9 pages

Written in 2025/2026

Grade A+

RealGrades

Emergent Properties - correct answers novel properties that emerge at one level of hierarchical organizations that are not present at the level immediately below. Darwin's Premise for the Theory of Evolution - correct answers 1. Organisms are product of common descent. 2. New species generated by gradual change. 3. Change brought about by differences in reproductive success of individuals. hydrogen, carbon, oxygen, nitrogen - correct answers All organisms are made up of? Matter - c...

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11 pages

Written in 2025/2026

Grade A+

RealGrades

matter - correct answers anything that takes up space and has mass, made up of elements element - correct answers cannot be broken into a simpler substance compound - correct answers substance consisting of two or more different elements in a fixed ratio eg: NaCl sodium chloride oxygen, carbon, hydrogren, nitrogen - correct answers essential elements that make up 96% of human body trace elements - correct answers required by living organisms in small quantities atom - correct answ...

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16 pages

Written in 2025/2026

Grade A+

RealGrades

T/F Atmospheric temperatures gradually and uniformly decrease as you move upward from Earth's surface and into the vacuum of space: - correct answers False Earth's atmosphere is primarily composed of: - correct answers Nitrogen This layer of Earth's atmosphere contains some of the highest atmospheric temperatures: - correct answers Thermosphere This section of our atmosphere houses the ozone layer, which helps to prevent ultraviolet (UV) radiation from reaching the Earth's s...

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4 pages

Written in 2025/2026

Grade A+

RealGrades

Theory - correct answers a broad, well-supported explanation encompassing all living things Hypothesis - correct answers a proposed explanation that applies to a specific phenomenon or observation When H2O is added to a compound in a chemical reaction, a new compound can be formed via what type of reaction? - correct answers Hydrolysis Adding NH3 (ammonia) to water makes NH4+. What will be the general pH of this new solution, and what will happen to the ion concentrations? - correct ans...

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27 pages

Written in 2025/2026

Grade A+

RealGrades

order of scientific method - correct answers observation, question, hypothesis, prediction, experiment, conclusion characteristics of hypothesis - correct answers must be testable and falsifiable Electron shells - correct answers shells further from the nucleus hold more energy Many of the reactions that occur during metabolism are reversible. Given the laws of thermodynamics, how is that possible? - correct answers Even in the same solution, some of the molecules of a particular specie...

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8 pages

Written in 2025/2026

Grade A+

RealGrades

anything that takes up space and has mass, made up of elements - correct answers matter cannot be broken into a simpler substance 92 naturally occurring - correct answers element substance consisting of two or more different elements in a fixed ratio eg: NaCl sodium chloride - correct answers compound properties of compounds are different than those of the elements which make it up - correct answers properties of compounds essential elements that make up 96% of human body - correct ...

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34 pages

Written in 2025/2026

Grade A+

RealGrades

What is matter? - correct answers The physical material that makes up the universe, anything that has mass and occupies space What is energy? - correct answers the capacity to do work and supply heat What is chemistry? - correct answers The study of nature properties, in transformations of matter and energy What are the three states of matter? - correct answers solid, liquid, gas Define solid - correct answers a substance that has a definite shape and volume Define a liquid - corr...

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2 pages

Written in 2025/2026

Grade A+

RealGrades

Density equation - correct answers Density = mass/volume Density units - correct answers g/mL or g/cm^3 double-displacement reaction - correct answers occurs readily among ionic compounds in solution when two ions that form an "insoluble" salt are mixed Average - correct answers mean average deviation - correct answers average of absolute deviations intensive properties - correct answers do not depend on the amount of matter present extensive properties - correct answers ...

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9 pages

Written in 2025/2026

Grade A+

RealGrades