LAREDO COMMUNITY COLLEGE Science Department CHEM 1411-1412 Practice Test Ch. 7 Periodic Properties Newton Name Instructions: Circle the letter of the BEST answer(s). Some questions may have multiple answers; be sure to include all correct answers. Each correct question is worth two (2) points. 1) __________ is credited with developing the concept of atomic numbers. A) Lothar Meyer B) Ernest Rutherford C) Michael Faraday
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physical and chemical properties. Physical properties are characteristics of a substance. Two types of physical properties are quantitative and qualitative. Quantitative is a property that has an amount or can be measured such as hardness‚ solubility‚ and viscosity. Qualitative is a physical description of matter such as color‚ clarity‚ and state. Chemical properties are characteristics of a substance which allows it to behave in a specific manner. A few types of chemical properties are combustibility
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Lodging Properties The different types of properties in the Lodging Industry: Hotels - Can be classified into star system (1-7). A structure that provides sleeping accommodations to travelers and that usually features dining facilities and daily housekeeping service Resorts - Cater primarily to leisure travelers. Generally found in four environments: at the beach‚ near ski areas‚ in the desert and near (or even in) theme parks and attractions. Motels- usually do not have full dining facilities
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especially in math‚ before adding a word that may affect the meaning or definition of the main word(s). Commutative property is: In math‚ the commutative property addresses only natural numbers. The commutative property also states the order of numbers‚ when added or multiplied‚ is not important. 1. What is the definition of the commutative property of addition? The commutative property of addition states the order of addends (natural numbers) does not change the sum. 2. Example 2 a.
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Magnetic Properties of Solids Magnetic Properties Magnetic (with unpaired electron) Materials Non-magnetic or diamagnetic (electrons all paired up) Paramagnetic Ferromagnetic Antiferromagnetic Ferrimagnetic Magnetic Behavior B = μH B = μ0H + μ0M Induction generated Induction generated by the field by the sample B: magnetic flux density μ: permittivity (m0: free space) H: magnetic field M: Magnetization χ = M/H χ: magnetic susceptibility B = μ0H + μ0Hχ B = μ0H (1 + χ) = μH
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Lab #6 Properties of Hydrates Purpose: The purpose of the “Properties of Hydrates” lab is to study hydrates‚ and be able to identify them. This lab also focuses on observing the reversibility of hydration reactions by hydrolysis‚ and also testing substances for efflorescence of deliquescence. Procedure: A. Identification 1. Place 0.5 grams of each compound (Nickel Chloride‚ Potassium Chloride‚ Sodium Tetraborate‚ Sucrose‚ Calcium Carbonate‚ and Barium Chloride) in a small dry test
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1. What is the ability of one substance to dissolve in another substance called? The ability of one substance to dissolve in another is called solubility. 2. What are the three properties of matter? The three properties of matter are gas‚ solid‚ and liquid. 3. What is matter made up of? Matter is made up of tiny particles. 4. Compare and contrast the movement of particles in solids‚ liquids‚ and gases. Solids: They move back and forth. They do not change places with each other
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Purpose: The purpose of this experiment was to test and observe the physical and chemical properties of gases‚ and to use these properties to identify these gases when they are encountered. Procedure: Create a data table similar to that in the lab assistant to record your observations. Gather the following lab equipment: Goggles‚ test tubes‚ 24 well plate‚ Gas assembly with copper and plastic tubing and a #00 stopper‚ short stem pipet‚ rubber stopper #00 with one hole and a pipet tip with
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Property Accountability in the COE Course Summary 1 Property Accountability Course Summary Takeaway Introduction Welcome to the Property Accountability in the Current Operating Environment lesson summary. This printable takeaway will review many of the key training points presented in the course. Classes of Supply The Army uses a multitude of different items on a daily basis‚ each of these items falls into one of ten classes of supply. Commanders use the different classes of supply
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Properties of Water Lab # 1 Biology 111 January 23‚ 2011 INTRODUCTION With surface tension it is made possible for items such as paper clips to float on water‚ because a molecule within the mass of a liquid encounters gravity to all adjacent molecules in all directions. When you use surfactant substances this creates hydrogen bonds. Purpose of experiment 1 will be to show that once the surfactant substances hits the hydrogen bond pulls down paper clips. Things
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