Matter in Chemistry
... A chemical change occurs when matter changes chemically into an entirely different substance with different properties. • When vinegar (liquid) and baking soda (solid) combine, they form carbon dioxide (gas). ...
... A chemical change occurs when matter changes chemically into an entirely different substance with different properties. • When vinegar (liquid) and baking soda (solid) combine, they form carbon dioxide (gas). ...
Science Notes on Physical and Chemical Properties
... Example – Tear a piece of paper into 10-15 pieces. The shape and size have changed, but its still paper Example – Change of state = physical change…add energy to ice and you get a liquid…add more energy and you get a gas…all physical changes as it is still water Example – Dissolving things is a phys ...
... Example – Tear a piece of paper into 10-15 pieces. The shape and size have changed, but its still paper Example – Change of state = physical change…add energy to ice and you get a liquid…add more energy and you get a gas…all physical changes as it is still water Example – Dissolving things is a phys ...
Reactions Unit Plan
... http://www.chem.iastate.edu/group/Greenbowe/sections/projectfolder/flashfiles/redox/ho me.html ...
... http://www.chem.iastate.edu/group/Greenbowe/sections/projectfolder/flashfiles/redox/ho me.html ...
e c n i
... a. W hen symbol is a single letter: always capitalize: Hydrogen=H b. W hen symbol is two letters, capitalize first letter & lower case ...
... a. W hen symbol is a single letter: always capitalize: Hydrogen=H b. W hen symbol is two letters, capitalize first letter & lower case ...
Physical Science
... The activation energy is the energy needed by a system to initiate the reaction. It is the minimum energy needed for a specific chemical reaction to occur. Once achieved, the reaction continues until reactants are ...
... The activation energy is the energy needed by a system to initiate the reaction. It is the minimum energy needed for a specific chemical reaction to occur. Once achieved, the reaction continues until reactants are ...
Cosmetology Learning Module 12
... Is a change in the chemical and physical properties of a substance by a chemical reaction that creates a new substance or substances The result of a chemical reaction that creates new chemicals that have new chemical and ...
... Is a change in the chemical and physical properties of a substance by a chemical reaction that creates a new substance or substances The result of a chemical reaction that creates new chemicals that have new chemical and ...
Matter- Types and Changes
... components with variable composition • Solution – material with two or more components homogeneously mixed; can have variable proportions of the components • Pure substance – material with a constant chemical composition ...
... components with variable composition • Solution – material with two or more components homogeneously mixed; can have variable proportions of the components • Pure substance – material with a constant chemical composition ...
Chapter_2_Study_Guide-2013
... Important: Unlike a physical change, a chemical change produces new substances with properties different from those of the original substances Describe the law of conservation of matter: ...
... Important: Unlike a physical change, a chemical change produces new substances with properties different from those of the original substances Describe the law of conservation of matter: ...
Chapter 5 – Chemical Reactions
... Particle size – the smaller the particles the faster the reaction (example – dust explosion) Higher temperature – the higher the temperature the faster the reaction Increase concentration of solution (a more concentrated acid will react faster than a dilute ...
... Particle size – the smaller the particles the faster the reaction (example – dust explosion) Higher temperature – the higher the temperature the faster the reaction Increase concentration of solution (a more concentrated acid will react faster than a dilute ...
Chemistry 2011-2012
... SC2d. Identify and solve different types of stoichiometry problems, specifically relating mass to moles and mass to mass. SC3 Students will use the modern atomic theory to explain the characteristics of atoms. SC3e. Compare and contrast types of chemical bonds (i.e. ionic, covalent). SC7. Students w ...
... SC2d. Identify and solve different types of stoichiometry problems, specifically relating mass to moles and mass to mass. SC3 Students will use the modern atomic theory to explain the characteristics of atoms. SC3e. Compare and contrast types of chemical bonds (i.e. ionic, covalent). SC7. Students w ...
Unit 1 - Measurement Atomic Theory
... (ii) Temperature – Kelvin (K) (iii) Luminescence – candela (cd) (iv) Quantity – mole (mol) (v) Time – second (s) (vi) Current – Amperes (A) (vii) Mass – kilograms (kg) (b) Coversions (i) Use dimensional analysis and conversion factors ...
... (ii) Temperature – Kelvin (K) (iii) Luminescence – candela (cd) (iv) Quantity – mole (mol) (v) Time – second (s) (vi) Current – Amperes (A) (vii) Mass – kilograms (kg) (b) Coversions (i) Use dimensional analysis and conversion factors ...
Chemical Reactions
... What is a chemical reaction? • A chemical reaction is the process by which the atoms of one or more substances are rearranged to form different substances. ...
... What is a chemical reaction? • A chemical reaction is the process by which the atoms of one or more substances are rearranged to form different substances. ...
1. What is a Chemical Reaction?
... • A chemical formula tells the composition of a compound using chemical symbols and subscripts. Example: H2O The letters represent the type of element, the #2 (subscript) indicates how many atoms of the element are in the substance. If no subscript is present, then it means there is only 1 atom of t ...
... • A chemical formula tells the composition of a compound using chemical symbols and subscripts. Example: H2O The letters represent the type of element, the #2 (subscript) indicates how many atoms of the element are in the substance. If no subscript is present, then it means there is only 1 atom of t ...
Chapter 1: The Mole
... Heart of Chemistry Chemical formulas used. An arrow is used to separate reactants and ...
... Heart of Chemistry Chemical formulas used. An arrow is used to separate reactants and ...
Targets of Opportunity
... endangering refinery communities...The environmental hazards of HF as used at refineries have to do with the high volumes utilized, the potential for high temperatures and pressures to be involved in a release, and the tendency of HF, once released to the environment, to form deadly gas clouds that ...
... endangering refinery communities...The environmental hazards of HF as used at refineries have to do with the high volumes utilized, the potential for high temperatures and pressures to be involved in a release, and the tendency of HF, once released to the environment, to form deadly gas clouds that ...
New Title
... b. A chemical equation summarizes a reaction. c. The formulas for the reactants are written on the right. d. Symbols in the equation show the reactants and the products. ...
... b. A chemical equation summarizes a reaction. c. The formulas for the reactants are written on the right. d. Symbols in the equation show the reactants and the products. ...
Chapter 1 Introduction: Matter and Measurement
... classification of matter Figure 1.9 instead of “uniform throughout” use “uniform at microscopic (atomic and molecular) ...
... classification of matter Figure 1.9 instead of “uniform throughout” use “uniform at microscopic (atomic and molecular) ...
1st mid unit test formative (pre-test)
... Match the word to the meaning by writing the letter on the line. ...
... Match the word to the meaning by writing the letter on the line. ...
1st mid unit test formative (pre-test)
... Match the word to the meaning by writing the letter on the line. ...
... Match the word to the meaning by writing the letter on the line. ...
Standard Operating Procedure Template
... ● The Principal Investigator is responsible for training employees using the material on site. The training should include a discussion of the known and potential hazards; an explanation of the relevant policies, techniques and procedures including the proper use of personal protective equipment, em ...
... ● The Principal Investigator is responsible for training employees using the material on site. The training should include a discussion of the known and potential hazards; an explanation of the relevant policies, techniques and procedures including the proper use of personal protective equipment, em ...
Matter, Mass and Weight
... another, but cannot be created or destroyed. A system can exchange its energy with its surrounding in two forms: heat and work. When a gas is in contact with an object at higher temperature, energy flows in as heat. This flow of energy into the system increases the thermal motion of its particles an ...
... another, but cannot be created or destroyed. A system can exchange its energy with its surrounding in two forms: heat and work. When a gas is in contact with an object at higher temperature, energy flows in as heat. This flow of energy into the system increases the thermal motion of its particles an ...
Chemical weapon
A chemical weapon (CW) is a munition that uses chemicals formulated to inflict death or harm on human beings. The Organisation for the Prohibition of Chemical Weapons (OPCW) states: The term chemical weapon may also be applied to any toxic chemical or its precursor that can cause death, injury, temporary incapacitation or sensory irritation through its chemical action. Munitions or other delivery devices designed to deliver chemical weapons, whether filled or unfilled, are also considered weapons themselves.They are classified as weapons of mass destruction (WMDs), though they are distinct from nuclear weapons, biological weapons (diseases), and radiological weapons (which use radioactive decay of elements). All may be used in warfare known by the military acronym NBC, for nuclear, biological, and chemical warfare. Weapons of mass destruction are distinct from conventional weapons, which are primarily effective due to their explosive, kinetic, or incendiary potential. Chemical weapons can be widely dispersed in gas, liquid and solid forms, and may easily afflict others than the intended targets. Nerve gas, tear gas and pepper spray are three modern examples.Lethal, unitary, chemical agents and munitions are extremely volatile and they constitute a class of hazardous chemical weapons that are now being stockpiled by many nations. (Unitary agents are effective on their own and require no mixing with other agents.) The most dangerous of these are nerve agents GA, GB, GD, and VX, and vesicant (blister) agents which are formulations of sulfur mustard such as H, HT, and HD. All are liquids at normal room temperature, but become gaseous when released. Widely used during the First World War, the effects of so-called mustard gas, phosgene gas and others caused lung searing, blindness, death and maiming.Pepper spray is of common use today. It is potentially lethal. There are no recent records of pepper spray being used in war, despite the fact that it inflicts fewer injuries and side-effects compared with impact and explosive weapons.Under the Chemical Weapons Convention (1993), there is a legally binding, world-wide ban on the production, stockpiling, and use of chemical weapons and their precursors. Notwithstanding, large stockpiles thereof continue to exist, usually justified as only a precaution against putative use by an aggressor.