Reading-Chem v Phys
... signify a physical change. Table salt (sodium chloride) is a white solid at room temperature. It can also exist in each of the three physical states. However, the temperatures at which the changes of state occur in sodium chloride are much higher than for the corresponding changes in water. Sodium c ...
... signify a physical change. Table salt (sodium chloride) is a white solid at room temperature. It can also exist in each of the three physical states. However, the temperatures at which the changes of state occur in sodium chloride are much higher than for the corresponding changes in water. Sodium c ...
Main Group Notes 1
... Such compounds were among the first that were recognized to contain bonds between metals and carbon. These were thus some of the initial examples of organometallic chemistry (one of the most studied branches of inorganic chemistry today). ...
... Such compounds were among the first that were recognized to contain bonds between metals and carbon. These were thus some of the initial examples of organometallic chemistry (one of the most studied branches of inorganic chemistry today). ...
01 Intro Chemistry
... Reductionist view of biology Matter is made of atoms Life requires ~25 chemical elements Atomic structure determines behavior of an ...
... Reductionist view of biology Matter is made of atoms Life requires ~25 chemical elements Atomic structure determines behavior of an ...
02Ch02chemistry2005
... Reductionist view of biology Matter is made of atoms Life requires ~25 chemical elements Atomic structure determines behavior of an ...
... Reductionist view of biology Matter is made of atoms Life requires ~25 chemical elements Atomic structure determines behavior of an ...
UNIT 1 - MATTER AND CHEMICAL BONDING
... a) C-12 as basis of mole b) Avogadro’s constant c) isotopic abundance & relative atomic mass d) empirical & molecular formula e) law of definite proportions or constant composition f) quantitative relationships in a balanced equation g) limiting reagent h) actual yield, theoretical yield, percentage ...
... a) C-12 as basis of mole b) Avogadro’s constant c) isotopic abundance & relative atomic mass d) empirical & molecular formula e) law of definite proportions or constant composition f) quantitative relationships in a balanced equation g) limiting reagent h) actual yield, theoretical yield, percentage ...
Chapter 2 Chemistry
... Reductionist view of biology Matter is made of atoms Life requires ~25 chemical elements Atomic structure determines behavior of an ...
... Reductionist view of biology Matter is made of atoms Life requires ~25 chemical elements Atomic structure determines behavior of an ...
MYP Chemistry: Final Review
... another molecule Hydrogen Bond – very polar molecules, H bonded to N,O,F creates a H-bond to another very polar molecule ...
... another molecule Hydrogen Bond – very polar molecules, H bonded to N,O,F creates a H-bond to another very polar molecule ...
Class Activity
... melting wax or ice. Most of the physical changes are reversible (you can change them back easily). Physical properties are associated with physical state and changes: texture, density, hardness, viscosity, crystalline form, boiling point, freezing point, and vapor pressure. Chemical Change: Chemical ...
... melting wax or ice. Most of the physical changes are reversible (you can change them back easily). Physical properties are associated with physical state and changes: texture, density, hardness, viscosity, crystalline form, boiling point, freezing point, and vapor pressure. Chemical Change: Chemical ...
The Cool Balancing Chemical Reactions Presentation
... Yes! The law of conservation of mass was established in 1789 by French Chemist Antoine Lavoisier. The law states that matter cannot be destroyed or created in any ordinary chemical reaction. This simply means that the mass of the reactants must be equal to the mass of the product. This is the reaso ...
... Yes! The law of conservation of mass was established in 1789 by French Chemist Antoine Lavoisier. The law states that matter cannot be destroyed or created in any ordinary chemical reaction. This simply means that the mass of the reactants must be equal to the mass of the product. This is the reaso ...
Chapter 2 - OrgSites.com
... a. Atomic number ________________ b. Atomic mass __________________ c. Number of protons ______________ d. Number of electrons ____________ 9. What are isotopes (not a baseball team)? 10. Give 2 examples of stable carbon isotopes. a. b. Unit 1 Study Guide: The Chemistry of Life ...
... a. Atomic number ________________ b. Atomic mass __________________ c. Number of protons ______________ d. Number of electrons ____________ 9. What are isotopes (not a baseball team)? 10. Give 2 examples of stable carbon isotopes. a. b. Unit 1 Study Guide: The Chemistry of Life ...
Tutorial 1
... 15. The commonly accepted measurement now used by dietary specialist in assessing whether a person is overweight is the body mass index (BMI). BMI is based on a person’s weight and height. It is the mass, in kilograms, divided by the square of the height in meters, which is, expressed in kg/m2. Gene ...
... 15. The commonly accepted measurement now used by dietary specialist in assessing whether a person is overweight is the body mass index (BMI). BMI is based on a person’s weight and height. It is the mass, in kilograms, divided by the square of the height in meters, which is, expressed in kg/m2. Gene ...
Chemical reactions unit
... There are 6 factors that affect the rate of chemical reactions: 1. Increase in temperature: Why? The particles are moving faster and have more chances to collide into each other to make a reaction. 2. Increase in Surface area: Why? More of the substance is exposed, so the particles have more opportu ...
... There are 6 factors that affect the rate of chemical reactions: 1. Increase in temperature: Why? The particles are moving faster and have more chances to collide into each other to make a reaction. 2. Increase in Surface area: Why? More of the substance is exposed, so the particles have more opportu ...
Writing Formulas
... subscripts to indicate the number of each ion present. Remember the algebraic sum of the ions' oxidation numbers must equal zero. (Balance) Learn the polyatomic ions. Learn those ions with multiple oxidation numbers and use Roman numerals to indicate the charge. ...
... subscripts to indicate the number of each ion present. Remember the algebraic sum of the ions' oxidation numbers must equal zero. (Balance) Learn the polyatomic ions. Learn those ions with multiple oxidation numbers and use Roman numerals to indicate the charge. ...
Chemical reactions unit
... There are 6 factors that affect the rate of chemical reactions: 1. Increase in temperature: Why? The particles are moving faster and have more chances to collide into each other to make a reaction. 2. Increase in Surface area: Why? More of the substance is exposed, so the particles have more opportu ...
... There are 6 factors that affect the rate of chemical reactions: 1. Increase in temperature: Why? The particles are moving faster and have more chances to collide into each other to make a reaction. 2. Increase in Surface area: Why? More of the substance is exposed, so the particles have more opportu ...
Chemical Reactions & Balancing Equations
... number of atoms on both sides. • Use only molecules or atoms already in the formulas • No new compounds used or created • Start with the element you need more of! ...
... number of atoms on both sides. • Use only molecules or atoms already in the formulas • No new compounds used or created • Start with the element you need more of! ...
Group IV Elements
... Carbon disulfide is one of the samll molecules that readilyundergo insertion reactions. ...
... Carbon disulfide is one of the samll molecules that readilyundergo insertion reactions. ...
Things to Know to Pass the Chemistry Regents
... 5. Orbitals: most probable location of electrons in e- cloud, modern (wave-mechanical) model 6. Mass number: protons + neutrons, C-14 has a mass of 14 (6p + 8n = 14) 7. Atomic number: equals # of protons, identifies element/atom *all atoms with 6p are carbon, all atoms of carbon have 6p 8. Number of ...
... 5. Orbitals: most probable location of electrons in e- cloud, modern (wave-mechanical) model 6. Mass number: protons + neutrons, C-14 has a mass of 14 (6p + 8n = 14) 7. Atomic number: equals # of protons, identifies element/atom *all atoms with 6p are carbon, all atoms of carbon have 6p 8. Number of ...
Ch6-Energy in Chemical Reactions-Chemical Reactions
... In chemistry, the mole is the standard measurement of amount. When substances react according to chemical equations, they do so in simple ratios of moles. However, balances give readings in grams. Balances DO NOT give readings in moles. So the problem is that, when we compare amounts of one substanc ...
... In chemistry, the mole is the standard measurement of amount. When substances react according to chemical equations, they do so in simple ratios of moles. However, balances give readings in grams. Balances DO NOT give readings in moles. So the problem is that, when we compare amounts of one substanc ...
Energy and Chemical Change Can changes be reversed
... a sheet of paper into pieces, the total mass of the pieces will be the same as the mass of the paper you started with. Mass is conserved, or unchanged, during a physical change. Mass is also conserved during chemical changes. Antoine Lavoisier, a French chemist, discovered this in the 1700s. The mas ...
... a sheet of paper into pieces, the total mass of the pieces will be the same as the mass of the paper you started with. Mass is conserved, or unchanged, during a physical change. Mass is also conserved during chemical changes. Antoine Lavoisier, a French chemist, discovered this in the 1700s. The mas ...
Chapter 2 Chemical context of Life
... on top of a hill. Matter has the tendency to move to the lowest possible state of potential energy. The electrons of an atom have potential energy because of how they are arranged in relation to the nucleus. Electrons are attracted by the positive nucleus. It takes energy to move electrons farther a ...
... on top of a hill. Matter has the tendency to move to the lowest possible state of potential energy. The electrons of an atom have potential energy because of how they are arranged in relation to the nucleus. Electrons are attracted by the positive nucleus. It takes energy to move electrons farther a ...
History of chemistry
The history of chemistry represents a time span from ancient history to the present. By 1000 BC, civilizations used technologies that would eventually form the basis to the various branches of chemistry. Examples include extracting metals from ores, making pottery and glazes, fermenting beer and wine, extracting chemicals from plants for medicine and perfume, rendering fat into soap, making glass, and making alloys like bronze.The protoscience of chemistry, alchemy, was unsuccessful in explaining the nature of matter and its transformations. However, by performing experiments and recording the results, alchemists set the stage for modern chemistry. The distinction began to emerge when a clear differentiation was made between chemistry and alchemy by Robert Boyle in his work The Sceptical Chymist (1661). While both alchemy and chemistry are concerned with matter and its transformations, chemists are seen as applying scientific method to their work.Chemistry is considered to have become an established science with the work of Antoine Lavoisier, who developed a law of conservation of mass that demanded careful measurement and quantitative observations of chemical phenomena. The history of chemistry is intertwined with the history of thermodynamics, especially through the work of Willard Gibbs.