Chapter 2 review measurements and calculations answer key

Chemistry: Mr Richards. Search this site.

chapter 2 review measurements and calculations answer key

Important Documents. How to be Successful. Chemistry Reference Sheets. Chapter 1: Matter and Change. Chapter 2: Measurements and Calculations.

Chemistry Lesson: Significant Digits & Measurements

Chapter 3: Atomic Structure. Chapter 4: Quantum Atomic Model. There is a lot of math involved in the study of chemistry. Therefore, it is important for to review the metric system and some of the units we will be using this year.

It goes without saying that chemistry uses the metric system. You need to stop thinking in terms of pounds, Fahrenheit, and gallons, and start thinking in terms of grams, Celsius, and liters. It is used as a common measurement system around the world. Below are the common base units used in chemistry:. Metric Conversions. Significant Figures. Scientific Notation. Chapter 2 Review CP. Chapter 2 Review H. Chapter 2 Worksheet - Density. Chapter 2 Worksheet - Significant Figures H.

Density Problems CP. Experiment 4 - Density Advanced. Experiment 4 - Density CP.Chapter 2 Earthquakes and Volcanoes. Volcano World. Chapter 2 Review Answer Key. A seismic seawave produced by a volcanic eruptionan underwater landslide, or an earthquake. They sometimes reach heights of over 50 feet. They are also called tidal waves. Explain the difference between a focus and an epicenter. The focus is the actual point of rock breakage or movement.

The epicenter is the point on the surface of the Earth directly above the focus. Name the three types of earthquake waves. Compression or P waves, Shear or S waves, and Surface waves. What is magnitude and how is it related to the Richter Scale? Magnitude is the measure of the strength of the seismic waves that have been sent out from the focus. Richter scale is a number used to measure the strength of an earthquake.

A Richter scale measurement of is of low intesity and is of high intensity.

Chapter Review

What is an fault? A long crack in the Earth's crust. Earthquakes occur along such cracks. What are the two definitions for a volcano? What is the difference between active, dormantand extinct volcanoes. Active volcanoes are either currently erupting or have erupted in recorded history. Dormant volcanoes are not currently erupting but are considered likely to do so.

Extinct volcanoes have not erupted in current history and are not considered likey to do so. What is the difference between magma and lava? Magma is molten rock under the Earth's surface. Lava is molten rock on the Earth's surface. Label the following diagram A. Magma chamber B.

Dike C. Side vent D. Conduit E.Chemistry Ch. Played times. Print Share Edit Delete. Live Game Live. Finish Editing. This quiz is incomplete! To play this quiz, please finish editing it. Delete Quiz. Question 1. In an experiment, onion plants of different ages were exposed to various amounts of caffeine to determine the effect of caffeine on cell growth. Temperature, amount of water, and light were kept constant.

Which of these statements about the experiment is definitely true? The results may not be valid because there were two variables. The amount of caffeine used was a control. Temperature, water, and light were the only variables.

Onion plants can be used to model the effects of caffeine on living things. Which of these is the variable in an experiment designed to determine whether steel rusts more quickly near a lake or in a desert in one year? Which of these recorded observations is qualitative, rather than quantitative? A chemical reaction is complete in 2. The solid has a mass of The compound melts at Iron is denser than aluminum.

Which of these terms best describes the following statement? Which of these statements is true of the scientific method?

The steps may vary somewhat to suit the experiment. Working scientists rarely use it. Scientists must follow its steps exactly. Scientists rarely publish results of experiments.

Theories are considered successful only if they. An experiment is designed to measure the effect of global temperature increase on ocean levels. In this experiment, if the ocean level is compared to the average ocean level over the last years, then the average ocean level over the last years would be considered.Name two types of energy.

Kinetic energy and potential energy. State the law of conservation of energy. The law of conservation of energy, a fundamental concept of physics, states that the total amount of energy remains constant in an isolated system. It implies that energy can neither be created nor destroyed, but can be change from one form to another.

CHEAT SHEET

What is the difference between heat and temperature? Heat is thermal energy. Temperature is the measurement of average kinetic energy of the particles which compose the matter being tested. When heat flows into a material, one of two things can happen — the temperature of the material can rise, or there may be a change in state such as from liquid to vapor.

What is the difference between a theory and a law? What is accuracy? What is precision? Accuracy refers to the closeness of a measured value to a standard or known value. Precision refers to the closeness of two or more measurements to each other. What are significant figures? Water evaporates from a puddle on a hot, sunny day faster than on a cold, cloudy day. Explain this phenomenon in terms of inter- actions between matter and energy. On a warm sunny day, the atoms in the water absorb energy from the surrounding air and the sun, which increases the energy of the atoms similar to what happens inside a microwavecausing them to evaporate faster.

Which beaker contains water molecules that have greater average kinetic energy? Explain your answer. Since beaker B is at a higher temperature than beaker A, the water molecules must be moving faster in beaker B than in beaker A on average. If heat is being applied to the beakers, then the increased amount of heat applied to beaker B is greater, and the heat will cause the water molecules in beaker B to move faster than the water molecules in beaker A on average.

What is the difference between a physical change and a chemical change? Melting a sugar cube is a physical change, because the substance is still sugar. Burning a sugar cube is a chemical change. Fire activates a chemical reaction between sugar and reactions O2. The oxygen in the air reacts with the sugar, and the chemical bonds are broken. Studying Matter and Energy What does a good hypothesis require?

The ability to be accurately tested is a good hypothesis. Classify the following statements as obser- vation, hypothesis, theory, or law: a. A system containing many particles will not go spontaneously from a disordered state to an ordered state.Search this site.

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Shared Academic Biology Resources. Keystone Review Materials. Biology Midterm Review. Biology Final Review. Academic Chemistry. Chapter 4 - Arrangement of Electrons in Atoms. Chapter 5 - The Periodic Law. Chapter 6 - Chemical Bonding. H Chem Midterm Review.

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Chapter 9 - Stoichiometry. Chapter 10 - States of Matter.

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Chapter 11 - Gases. Chapter 16 - Reaction Energy. H Chem Final Review.

CHEAT SHEET

In this chapter, we will discuss the importance of taking accurate and precise measurements and recording detailed observations, both in chemistry or any other field. SI International Standard prefixes, base units, and derived units will be reviewed, and we will practice converting between different units of measurement. In addition, the concept of significant figures will be introduced for the first time, and calculations involving significant figures will be performed. Finally, we will also review writing numbers in both scientific and standard notation.

The measurement and calculation skills we learn in this chapter will be applied and used throughout the year. Labs this unit will involve measuring and calculating density, creating graphs, calculating percent error, and using the concept of proportionality. Use the links below to find chapter assignments, notes, study guides, and other activities from Chapter 2.

Chapter 2 Study Guide. Section 1 - The Scientific Method. Notes - The Scientific Method. Lab - Qualitative Observations of a Chemical Reaction. Section 2 - Units of Measurement.

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Practice Problems - Sig Figs. Practice Problems - Sig Figs Key. Practice Problems - Scientific Notation. Practice Problems - Scientific Notation Key. Section 3 - Using Scientific Measurements. Notes - Density. Practice Problems - Density.In the event of a fixture, map or round starting but not being completed, bets will be void unless the outcome is already determined.

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chapter 2 review measurements and calculations answer key

Where a tournament is reduced from the scheduled number of holes for any reason (e. If less than 36 holes have been completed or outright bets were placed after the final completed round then bets will be void. Ante-Post bets on any player who takes part in a qualifying tournament but then fails to qualify for the main tournament will be classed as losers. Skins Tournaments will be subject to dead-heat rules in the event of players winning equal amounts of prize money at the end of the specified competition.Four Washington turnovers were the difference in their season opening 30-17 loss versus Philadelphia.

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chapter 2 review measurements and calculations answer key

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