Intermediate 1 Chemistry - Deans Community High School
... Covalent Compounds • Covalent bonds only appear in non-metal compounds like water (H2O) and Carbon dioxide(CO2) • The compounds are also known as molecules and the covalent bonds are very strong between the non-metal atoms. • Between all the molecules there is weak forces holding them together. ...
... Covalent Compounds • Covalent bonds only appear in non-metal compounds like water (H2O) and Carbon dioxide(CO2) • The compounds are also known as molecules and the covalent bonds are very strong between the non-metal atoms. • Between all the molecules there is weak forces holding them together. ...
File
... Boil the salt water so that the water turns to gas. Salt will be left behind in the beaker. 21. How do you identify a substance as a compound? Each substance has a unique set of properties by which it can be identified. For example, the color, melting point temperature, density, odor, and reactivity ...
... Boil the salt water so that the water turns to gas. Salt will be left behind in the beaker. 21. How do you identify a substance as a compound? Each substance has a unique set of properties by which it can be identified. For example, the color, melting point temperature, density, odor, and reactivity ...
Unit (1)
... 3- The nearest planet to the sun is ……………… and the farthest one from the sun is ……………… 4- Mercury, …………… , …………… and mars are the inner planets. 5- …………… planet has 27 moons revolving around it, while …………… planet has 12 moons revolving around it. 6- The comet consists of two parts which are …………… a ...
... 3- The nearest planet to the sun is ……………… and the farthest one from the sun is ……………… 4- Mercury, …………… , …………… and mars are the inner planets. 5- …………… planet has 27 moons revolving around it, while …………… planet has 12 moons revolving around it. 6- The comet consists of two parts which are …………… a ...
Name: 1) At 1 atmosphere and 298 K, 1 mole of H O(l) molecules
... Using your knowledge of chemistry and the information in the Vapor Pressure of Four Liquids chemistry reference table, which statement concerning propanone and water at 50DC is true? A) Propanone has a lower vapor pressure and weaker intermolecular forces than water. B) Propanone has a lower vapor p ...
... Using your knowledge of chemistry and the information in the Vapor Pressure of Four Liquids chemistry reference table, which statement concerning propanone and water at 50DC is true? A) Propanone has a lower vapor pressure and weaker intermolecular forces than water. B) Propanone has a lower vapor p ...
Properties and Changes Reading Assignment Name: Chemistry 2
... How can water be separated into hydrogen and oxygen? ________________________________________ The chemical formed when iron rusts is iron oxide (Fe2O3). Words such as burn, rot, rust, decompose, ferment, explode, and corrode usually signify a chemical change. The ability of a substance to undergo a ...
... How can water be separated into hydrogen and oxygen? ________________________________________ The chemical formed when iron rusts is iron oxide (Fe2O3). Words such as burn, rot, rust, decompose, ferment, explode, and corrode usually signify a chemical change. The ability of a substance to undergo a ...
Are You Ready For S201
... Sections 2–6 provide opportunities for you to test whether your current knowledge and understanding of the individual scientific disciplines and your skills of numeracy and mathematics are at least at the level assumed at the start of S201. The answers are given in Section 8. In addition to deciding ...
... Sections 2–6 provide opportunities for you to test whether your current knowledge and understanding of the individual scientific disciplines and your skills of numeracy and mathematics are at least at the level assumed at the start of S201. The answers are given in Section 8. In addition to deciding ...
PERIODIC TABLE OF THE ELEMENTS
... • Through countless experiments conducted in the 1700s, scientists were able to make a number of discoveries in the field of chemistry. • One such discovery involves the weighing of reactants and products of chemical reactions. • This led to the idea that mass is neither created nor destroyed, but t ...
... • Through countless experiments conducted in the 1700s, scientists were able to make a number of discoveries in the field of chemistry. • One such discovery involves the weighing of reactants and products of chemical reactions. • This led to the idea that mass is neither created nor destroyed, but t ...
A2 Module 2814: Chains, Rings and Spectroscopy
... those elements in which this d-subshell is filling (Sc–Zn), but the term “transition elements” is used for d-block elements that form one or more stable ions with a partially filled d-subshell. This excludes Sc and Zn, since their only common oxidation states are Sc3+ (3d0) and Zn2+ (3d10). This dis ...
... those elements in which this d-subshell is filling (Sc–Zn), but the term “transition elements” is used for d-block elements that form one or more stable ions with a partially filled d-subshell. This excludes Sc and Zn, since their only common oxidation states are Sc3+ (3d0) and Zn2+ (3d10). This dis ...
Lab Stuff:
... What types of substances are removed from mixtures using filtration? Adsorption? Distillation? Think about the foul water lab! ...
... What types of substances are removed from mixtures using filtration? Adsorption? Distillation? Think about the foul water lab! ...
2015 AP Chemistry Summer Assignment
... a) the mass of hydrogen is twice that of oxygen in each molecule. b) there are two hydrogen atoms and one oxygen atom per water molecule. c) the mass of oxygen is twice that of hydrogen in each molecule. d) there are two oxygen atoms and one hydrogen atom per water molecule. 16. Dalton assumed that ...
... a) the mass of hydrogen is twice that of oxygen in each molecule. b) there are two hydrogen atoms and one oxygen atom per water molecule. c) the mass of oxygen is twice that of hydrogen in each molecule. d) there are two oxygen atoms and one hydrogen atom per water molecule. 16. Dalton assumed that ...
Lab Stuff
... What types of substances are removed from mixtures using filtration? Adsorption? Distillation? Think about the foul water lab! ...
... What types of substances are removed from mixtures using filtration? Adsorption? Distillation? Think about the foul water lab! ...
CHEMISTRY PHYSICAL SETTING Thursday, PS/CHEMISTRY
... (1) Chemical energy is used to produce an electrical change. (2) Chemical energy is used to produce a thermal change. (3) Electrical energy is used to produce a chemical change. (4) Thermal energy is used to produce a chemical change. ...
... (1) Chemical energy is used to produce an electrical change. (2) Chemical energy is used to produce a thermal change. (3) Electrical energy is used to produce a chemical change. (4) Thermal energy is used to produce a chemical change. ...
Atoms, Molecules and Ions
... forms both Fe+ and Fe2+ ions, we need to use the Stock system and call the compound iron(II) nitrate. (b) The cation is Na+ and the anion is HPO42− (hydrogen phosphate). Because sodium only forms one type of ion (Na+), there is no need to use sodium(I) in the name. The compound is sodium hydrogen ph ...
... forms both Fe+ and Fe2+ ions, we need to use the Stock system and call the compound iron(II) nitrate. (b) The cation is Na+ and the anion is HPO42− (hydrogen phosphate). Because sodium only forms one type of ion (Na+), there is no need to use sodium(I) in the name. The compound is sodium hydrogen ph ...
Phy 211: General Physics I
... • Homogeneous: uniform throughout, appears to be one thing – Pure substances – Solutions (single phase homogeneous mixtures) – Suspensions (multi-phase homogeneous mixtures) ...
... • Homogeneous: uniform throughout, appears to be one thing – Pure substances – Solutions (single phase homogeneous mixtures) – Suspensions (multi-phase homogeneous mixtures) ...
HPhys_4_30.1
... • 4. (I) An electron acquires 7.45 X 10-16 J of kinetic energy when it is accelerated by an electric field from plate A to plate B. What is the potential difference between the plates, and which plate is at the higher potential? • 9. (II) Two parallel plates, connected to a 200-V power supply, are s ...
... • 4. (I) An electron acquires 7.45 X 10-16 J of kinetic energy when it is accelerated by an electric field from plate A to plate B. What is the potential difference between the plates, and which plate is at the higher potential? • 9. (II) Two parallel plates, connected to a 200-V power supply, are s ...
2016-2017 Summer Assignment AP Chem 2017 Summer
... The reaction of calcium carbide solid with water to form calcium hydroxide and acetylene (C2H2) gas. The reaction of solid calcium cyan amide (CaCN2) with water to from calcium carbonate and ammonia gas. Ethane burns in air (Oxygen). Hydrogen reacts with oxygen to from Water. Nitrogen gas reacts wit ...
... The reaction of calcium carbide solid with water to form calcium hydroxide and acetylene (C2H2) gas. The reaction of solid calcium cyan amide (CaCN2) with water to from calcium carbonate and ammonia gas. Ethane burns in air (Oxygen). Hydrogen reacts with oxygen to from Water. Nitrogen gas reacts wit ...
Electrolytic Etching Copper and Silver Using Copper Nitrate, a
... and effectiveness, upon closer examination, those same reasons argue against the use of table salt as an electrolyte. A number of chemical reactions make this common mineral less attractive for etching: ...
... and effectiveness, upon closer examination, those same reasons argue against the use of table salt as an electrolyte. A number of chemical reactions make this common mineral less attractive for etching: ...
Balancing Chemical Reactions
... 2.) The only numbers that can be changed are the numbers indicating how many molecules or atoms, which are called coefficients. 3.) A coefficient is assumed to be one if there is not a number in front of the molecule or atom. 4.) In order to be balanced, there must be an equal number of each type of ...
... 2.) The only numbers that can be changed are the numbers indicating how many molecules or atoms, which are called coefficients. 3.) A coefficient is assumed to be one if there is not a number in front of the molecule or atom. 4.) In order to be balanced, there must be an equal number of each type of ...
Chemistry - Bourbon County Schools
... Waals, dispersion) Explain and provide examples for dipole moments, bond polarity, and hydrogen bonding Describe the unique physical and chemical properties of water resulting from hydrogen bonding Explain the relationship between evaporation, vapor pressure, molecular kinetic energy, and boiling po ...
... Waals, dispersion) Explain and provide examples for dipole moments, bond polarity, and hydrogen bonding Describe the unique physical and chemical properties of water resulting from hydrogen bonding Explain the relationship between evaporation, vapor pressure, molecular kinetic energy, and boiling po ...
Formulae and equations
... The smallest particle of a compound (a combination of two or more elements). It is also the name given to the smallest part of those elements which do not exist as atoms in the free state i.e. hydrogen H2, oxygen O2, nitrogen N2, fluorine F2, chlorine Cl2, bromine Br2 and iodine I2. N.B. ionic compo ...
... The smallest particle of a compound (a combination of two or more elements). It is also the name given to the smallest part of those elements which do not exist as atoms in the free state i.e. hydrogen H2, oxygen O2, nitrogen N2, fluorine F2, chlorine Cl2, bromine Br2 and iodine I2. N.B. ionic compo ...
2.5 THE NAMES AND FORMULAS OF COMPOUNDS
... explain many of the properties of ionic compounds, but they aren’t sufficient to explain the physical state of molecular compounds. If covalent bonds were the only forces at work, molecular compounds would all be gases, as there would be no attraction between the molecules strong enough to order the ...
... explain many of the properties of ionic compounds, but they aren’t sufficient to explain the physical state of molecular compounds. If covalent bonds were the only forces at work, molecular compounds would all be gases, as there would be no attraction between the molecules strong enough to order the ...
C 3 H 8 (g) - Ms Critchley`s Lab
... 6. C3H8(g) + 5O2(g) 3CO2(g) + 4H2O(l) 7. C2H4(g) + H2(g) C2H6(g) 8. 2C2H6(l) + 7O2(g) 4CO2(g) + 6H2O(l) Write the equation for ΔHc for 9. H2(g) + ½ O2(g) H2O(l) 10. CH3OH(l) + O2(g) CO2(g) + H2O(l) 11. C(s) + O2(g) CO2(g) ...
... 6. C3H8(g) + 5O2(g) 3CO2(g) + 4H2O(l) 7. C2H4(g) + H2(g) C2H6(g) 8. 2C2H6(l) + 7O2(g) 4CO2(g) + 6H2O(l) Write the equation for ΔHc for 9. H2(g) + ½ O2(g) H2O(l) 10. CH3OH(l) + O2(g) CO2(g) + H2O(l) 11. C(s) + O2(g) CO2(g) ...
Electrochemistry
Electrochemistry is the branch of physical chemistry that studies chemical reactions which take place at the interface of an electrode, usually a solid metal or a semiconductor, and an ionic conductor, the electrolyte. These reactions involve electric charges moving between the electrodes and the electrolyte (or ionic species in a solution). Thus electrochemistry deals with the interaction between electrical energy and chemical change.When a chemical reaction is caused by an externally supplied current, as in electrolysis, or if an electric current is produced by a spontaneous chemical reaction as in a battery, it is called an electrochemical reaction. Chemical reactions where electrons are transferred directly between molecules and/or atoms are called oxidation-reduction or (redox) reactions. In general, electrochemistry describes the overall reactions when individual redox reactions are separate but connected by an external electric circuit and an intervening electrolyte.