Unit 1 – Physical Science and Chemical Reactions
... Malleable – the ability to be stretched by hammering or rolling compound: pure substance composed of at least two types of elements (or atoms) eg. water (H2O(ℓ)); salt (NaCl(s)) ...
... Malleable – the ability to be stretched by hammering or rolling compound: pure substance composed of at least two types of elements (or atoms) eg. water (H2O(ℓ)); salt (NaCl(s)) ...
+ H 2 O(g)
... Balance the reaction. Describe to which class of compounds (oxide, hydride, acid, base, salt) the reactants and the products belong. Write the ionic and net ionic equation. ...
... Balance the reaction. Describe to which class of compounds (oxide, hydride, acid, base, salt) the reactants and the products belong. Write the ionic and net ionic equation. ...
Lab Stuff:
... A sample of helium gas with an unknown volume is at 300 K and 101.6 kPa. When the gas is placed in a container with a volume of 6.5 mL and a temperature of 125 K, , the pressure is measured as 103.4 kPa. What was the original volume of the gas sample? Which gas law applies here? ____________________ ...
... A sample of helium gas with an unknown volume is at 300 K and 101.6 kPa. When the gas is placed in a container with a volume of 6.5 mL and a temperature of 125 K, , the pressure is measured as 103.4 kPa. What was the original volume of the gas sample? Which gas law applies here? ____________________ ...
Chemistry Notes - The Bored of Studies Community
... Carbon monoxide poisons the iron catalyst in the Haber process and so must be removed. This is done with other catalytic reaction: CO(g) + H2O(g) -> CO2(g) + H2(g) Which has the added advantage of producing more hydrogen. The catalyst used is either Fe 3O4 at 500C or Cu at 250C. A complication f ...
... Carbon monoxide poisons the iron catalyst in the Haber process and so must be removed. This is done with other catalytic reaction: CO(g) + H2O(g) -> CO2(g) + H2(g) Which has the added advantage of producing more hydrogen. The catalyst used is either Fe 3O4 at 500C or Cu at 250C. A complication f ...
chemistry 11 exam review
... 8. What pressure is needed to change 130 mL of gas at 740 torr to 150 mL? (641 torr) 9. What temperature change is needed to change 1.0 L of gas at 10.0C and 800.0 torr to 0.50 L and 760 torr? (-138C change to bring your final temperature to 134K) 10. A 1.0 L rubber bladder is filled with carbon d ...
... 8. What pressure is needed to change 130 mL of gas at 740 torr to 150 mL? (641 torr) 9. What temperature change is needed to change 1.0 L of gas at 10.0C and 800.0 torr to 0.50 L and 760 torr? (-138C change to bring your final temperature to 134K) 10. A 1.0 L rubber bladder is filled with carbon d ...
Mass-Mass Stoichiometry
... Gases and Gas Laws 35. What four variables affect the behavior of a gas? 36. Know the relationships (direct or inverse) between each pair of the four variables 37. What’s the molar mass of the following: a. O2 b. CO2 c. Rn d. Fe(NO3)3 e. Al2(SO4)3 38. How many moles are in a 45.0 L sample of O2 at S ...
... Gases and Gas Laws 35. What four variables affect the behavior of a gas? 36. Know the relationships (direct or inverse) between each pair of the four variables 37. What’s the molar mass of the following: a. O2 b. CO2 c. Rn d. Fe(NO3)3 e. Al2(SO4)3 38. How many moles are in a 45.0 L sample of O2 at S ...
File
... Sometimes energy is absorbed during a chemical change. Chemical reactions that absorb energy are called endothermic reactions. Earlier you learned that electricity was necessary to decompose water into oxygen and hydrogen. The reaction does not occur unless energy in the form of an electric current ...
... Sometimes energy is absorbed during a chemical change. Chemical reactions that absorb energy are called endothermic reactions. Earlier you learned that electricity was necessary to decompose water into oxygen and hydrogen. The reaction does not occur unless energy in the form of an electric current ...
I CAN write Chemical formulas
... 1. Write the oxidation number above each element. 2. Cross the oxidation numbers and write the oxidation number (without plus or minus) of one element as the subscript of the other element. 3. Reduce the subscripts (number of atoms) to their simplest form, if needed. WHAT IS THE CHEMICAL FORMULA FO ...
... 1. Write the oxidation number above each element. 2. Cross the oxidation numbers and write the oxidation number (without plus or minus) of one element as the subscript of the other element. 3. Reduce the subscripts (number of atoms) to their simplest form, if needed. WHAT IS THE CHEMICAL FORMULA FO ...
(3.3 × 10!4) + (2.52 × 10!2) = (3.3 × 10!4) × (2.52 × 10!2)
... atom. They cannot be decomposed or further simplified by ordinary means. ...
... atom. They cannot be decomposed or further simplified by ordinary means. ...
New AQA C3 revison guide
... distilling(boiled then condensed) it, which is what we often do if we need pure water in a chemistry lab. It would be far too expensive, as it would require lots of energy, to distil water for domestic use and it would have no taste. ...
... distilling(boiled then condensed) it, which is what we often do if we need pure water in a chemistry lab. It would be far too expensive, as it would require lots of energy, to distil water for domestic use and it would have no taste. ...
6-1 Endothermic and Exothermic Reactions
... q = specific heat of water x grams of water x change in temperature specific heat of water = 4.18 J /(g oC) grams of water = 50. change in temperature = final temperature - initial temperature There are 4.184 Joules in one calorie. Clean Up: Barium is a toxic metal and must be disposed of by EH&S. C ...
... q = specific heat of water x grams of water x change in temperature specific heat of water = 4.18 J /(g oC) grams of water = 50. change in temperature = final temperature - initial temperature There are 4.184 Joules in one calorie. Clean Up: Barium is a toxic metal and must be disposed of by EH&S. C ...
Example - cloudfront.net
... During a chemical reaction, atoms are either ____________, separated, or rearranged. The ______________ and type of each atom stays the same. How do you balance a chemical equation? Coefficients are placed in ________ of the substances involved in the chemical reaction to get the same _________ ...
... During a chemical reaction, atoms are either ____________, separated, or rearranged. The ______________ and type of each atom stays the same. How do you balance a chemical equation? Coefficients are placed in ________ of the substances involved in the chemical reaction to get the same _________ ...
Hydrogen Bonding
... At RT, oxygen and hydrogen: gaseous form; water molecule: liquid state due to Hydrogen Bonding between water molecules Water – Has important physical properties that make life possible on the Earth, ability to dissolve many other substances, serves as a medium in which a great variety of chemical ch ...
... At RT, oxygen and hydrogen: gaseous form; water molecule: liquid state due to Hydrogen Bonding between water molecules Water – Has important physical properties that make life possible on the Earth, ability to dissolve many other substances, serves as a medium in which a great variety of chemical ch ...
CHE 1401 - Summer 2012 - Chapter 5 Homework 5 (Chapter 5
... 9) The British thermal unit (Btu) is commonly used in engineering applications. A Btu is defined as the amount of heat required to raise the temperature of 1 lb of water by 1°F. There are __________ joules in one Btu. 1 lb = 453.59 g; °C = (5/9)(°F - 32°); specific heat of H2O (l) = 4.18 J/g-K. A) 1 ...
... 9) The British thermal unit (Btu) is commonly used in engineering applications. A Btu is defined as the amount of heat required to raise the temperature of 1 lb of water by 1°F. There are __________ joules in one Btu. 1 lb = 453.59 g; °C = (5/9)(°F - 32°); specific heat of H2O (l) = 4.18 J/g-K. A) 1 ...
CHE 1401 - Spring 2015 - Chapter 5 Homework 5 (Chapter 5
... E) both CO (g) and PF3 (g) 40) The most abundant fossil fuel is __________. A) hydrogen B) petroleum C) uranium D) coal E) natural gas ...
... E) both CO (g) and PF3 (g) 40) The most abundant fossil fuel is __________. A) hydrogen B) petroleum C) uranium D) coal E) natural gas ...
CHE 1401 - Spring 2016 - Chapter 5 Homework 5 (Chapter 5
... the heat capacity of the calorimeter is measured to be 9.84 kJ/K. The heat of reaction for the combustion of a mole of Ti in this calorimeter is __________ kJ/mol. A) -0.154 B) -1.49 × 104 C) 2.67 D) -311 E) 4.98 31) The British thermal unit (Btu) is commonly used in engineering applications. A Btu ...
... the heat capacity of the calorimeter is measured to be 9.84 kJ/K. The heat of reaction for the combustion of a mole of Ti in this calorimeter is __________ kJ/mol. A) -0.154 B) -1.49 × 104 C) 2.67 D) -311 E) 4.98 31) The British thermal unit (Btu) is commonly used in engineering applications. A Btu ...
CHE 1401 - Fall 2016 - Chapter 5 Homework 5 (Chapter 5
... __________ and has a __________ ΔH at constant pressure. A) endothermic, positive B) endothermic, negative C) exothermic, negative D) exothermic, positive E) exothermic, neutral ...
... __________ and has a __________ ΔH at constant pressure. A) endothermic, positive B) endothermic, negative C) exothermic, negative D) exothermic, positive E) exothermic, neutral ...
CHE 1401 - Fall 2015 - Chapter 5 Homework 5 (Chapter 5
... MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The British thermal unit (Btu) is commonly used in engineering applications. A Btu is defined as the amount of heat required to raise the temperature of 1 lb of water by 1°F. There are _________ ...
... MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The British thermal unit (Btu) is commonly used in engineering applications. A Btu is defined as the amount of heat required to raise the temperature of 1 lb of water by 1°F. There are _________ ...
Water splitting
Water splitting is the general term for a chemical reaction in which water is separated into oxygen and hydrogen. Efficient and economical water splitting would be a key technology component of a hydrogen economy. Various techniques for water splitting have been issued in water splitting patents in the United States. In photosynthesis, water splitting donates electrons to power the electron transport chain in photosystem II.