Elements, Compounds and Chemical Reactions
... element has an element cube that gives information about the element. The symbol is the short name for the element. Notice that for an element, there is only ONE capital letter! Sometime the chemical symbol doesn’t look like it comes from the name of the element. This happens when the symbol comes f ...
... element has an element cube that gives information about the element. The symbol is the short name for the element. Notice that for an element, there is only ONE capital letter! Sometime the chemical symbol doesn’t look like it comes from the name of the element. This happens when the symbol comes f ...
Final Exam Review
... Which statement best describes the effect of the temperature changes on the kinetic energy of the particles? a. Kinetic energy of metal atoms decreases in the flame. b. Kinetic energy of water molecules increases when the heated metal is immersed. c. Kinetic energy of water molecules decreases when ...
... Which statement best describes the effect of the temperature changes on the kinetic energy of the particles? a. Kinetic energy of metal atoms decreases in the flame. b. Kinetic energy of water molecules increases when the heated metal is immersed. c. Kinetic energy of water molecules decreases when ...
Chemistry exam review
... 1. Which example indicates that a chemical change has occurred? a. When aqueous solutions are mixed, a precipitate is formed. b. As ammonium nitrate dissolves in water, it causes the temperature to decrease. c. Alcohol evaporates when left in an open container. d. Water is added to blue copper(II) c ...
... 1. Which example indicates that a chemical change has occurred? a. When aqueous solutions are mixed, a precipitate is formed. b. As ammonium nitrate dissolves in water, it causes the temperature to decrease. c. Alcohol evaporates when left in an open container. d. Water is added to blue copper(II) c ...
electricitymagnetismnewsletter-1g4md3i
... will be created. The balloons will repel each other because of the number of negative charges. If one balloon is negatively charged and you have pepper on a plate, the pepper will jump towards the balloon because it has a positive charge and the opposites attract. This is a kind of electricity-stati ...
... will be created. The balloons will repel each other because of the number of negative charges. If one balloon is negatively charged and you have pepper on a plate, the pepper will jump towards the balloon because it has a positive charge and the opposites attract. This is a kind of electricity-stati ...
1 - College of Arts and Sciences
... The states of the reactants and products are written in parentheses to the right of each compound Coefficients are inserted to balance the equation ...
... The states of the reactants and products are written in parentheses to the right of each compound Coefficients are inserted to balance the equation ...
CHEMISTRY REVISION GUIDE for CIE IGCSE Coordinated Science
... •Must be balanced – same number of atoms on each side. •Balancing is done by placing numbers called coefficients in front of the formulas for the compounds/elements. For example, ‘O2‘ means there is one oxygen molecule involved in a reaction but ‘2O2’ would mean there are two. Example:. CH4(g) + O2( ...
... •Must be balanced – same number of atoms on each side. •Balancing is done by placing numbers called coefficients in front of the formulas for the compounds/elements. For example, ‘O2‘ means there is one oxygen molecule involved in a reaction but ‘2O2’ would mean there are two. Example:. CH4(g) + O2( ...
Chemical Reactions
... Pick up sock and board. Complete the Do Now via QR code or link I will be about 15-30 min late. This should be completed by the time I arrive. http://bit.ly/1LvB4ak ...
... Pick up sock and board. Complete the Do Now via QR code or link I will be about 15-30 min late. This should be completed by the time I arrive. http://bit.ly/1LvB4ak ...
Assignment Chemistry Class XI (2016-17)
... v is given by F = Kv2 where K is a constant. Find the dimensions of K. 13. The length and breadth of a rectangle are measured as (a± Δa) and (b±Δb) respectively. Find (i) relative error , (ii) absolute error in the measurement of area. 14. Write the dimensions of the following: variable force, momen ...
... v is given by F = Kv2 where K is a constant. Find the dimensions of K. 13. The length and breadth of a rectangle are measured as (a± Δa) and (b±Δb) respectively. Find (i) relative error , (ii) absolute error in the measurement of area. 14. Write the dimensions of the following: variable force, momen ...
Ch. 10 – Stoichiometry Stoichiometry – relates molar ratios between
... These molar ratios are used to 'convert' between any two compounds, whether they are reactants or products. This allows us to calculate moles of reactants needed, or products produced. ...
... These molar ratios are used to 'convert' between any two compounds, whether they are reactants or products. This allows us to calculate moles of reactants needed, or products produced. ...
First 9 weeks Study Guide 8th Grade
... How many: 3 C6H12O6 Elements: 3 Carbon, Hydrogen, and Oxygen Atoms: 3x6+3x12+3x6 = 72 atoms ...
... How many: 3 C6H12O6 Elements: 3 Carbon, Hydrogen, and Oxygen Atoms: 3x6+3x12+3x6 = 72 atoms ...
Word - chemmybear.com
... double replacement reaction, one of the products of the reaction is… a) H2 d) BaH2 b) H2O e) SO2 c) BaS 12. In the double replacement reaction between the weak acid, HC2H3O2 and strong base, NaOH, which ion(s) are spectator ions? a) Na+, C2H3O2– d) H+, C2H3O2– b) Na+, OH– ...
... double replacement reaction, one of the products of the reaction is… a) H2 d) BaH2 b) H2O e) SO2 c) BaS 12. In the double replacement reaction between the weak acid, HC2H3O2 and strong base, NaOH, which ion(s) are spectator ions? a) Na+, C2H3O2– d) H+, C2H3O2– b) Na+, OH– ...
6.7 – Ionic Compounds
... Octet Rule – Atoms will tend to lose electrons (metals) or gain electrons (nonmetals) in order to achieve a noble gas electron configuration. Therefore, atoms will lose or gain electrons to either have 0 or 8 valence electrons. Example: Magnesium is in Group 2A and therefore has 2 valence electrons. ...
... Octet Rule – Atoms will tend to lose electrons (metals) or gain electrons (nonmetals) in order to achieve a noble gas electron configuration. Therefore, atoms will lose or gain electrons to either have 0 or 8 valence electrons. Example: Magnesium is in Group 2A and therefore has 2 valence electrons. ...
Chapter 4 (additional powerpoint)
... are not the amounts that would be produced if the reactions were actually done in the laboratory. • In each case, less product would be obtained than was calculated. There are numerous causes. Some materials are lost during transfers from one container to another and side reactions take place that a ...
... are not the amounts that would be produced if the reactions were actually done in the laboratory. • In each case, less product would be obtained than was calculated. There are numerous causes. Some materials are lost during transfers from one container to another and side reactions take place that a ...
2nd Semester Final Exam Review
... 21. A 35 ml sample of .0317 M NaOH was used to titrate a .200 g sample of unknown acid. Calculate the molar mass of the acid. 22. Name four pieces of equipment used in a titration. 23. Write the net ionic equation for reaction between any strong acid with a strong base. 24. If the pH of a solution d ...
... 21. A 35 ml sample of .0317 M NaOH was used to titrate a .200 g sample of unknown acid. Calculate the molar mass of the acid. 22. Name four pieces of equipment used in a titration. 23. Write the net ionic equation for reaction between any strong acid with a strong base. 24. If the pH of a solution d ...
Chemistry Review2
... Note: single replacement reactions only produce products when the single metal in the reactant is more active than the metal in the compound in the reactant. 1.In the equation: Fe + CuSO4 predict products, balance the equation and determine what element is reduced and what element is oxidized. Bal ...
... Note: single replacement reactions only produce products when the single metal in the reactant is more active than the metal in the compound in the reactant. 1.In the equation: Fe + CuSO4 predict products, balance the equation and determine what element is reduced and what element is oxidized. Bal ...
Chemical Reactions
... naturally, the process is unaided. • Example: –Decomposition of dead matter = spontaneous endothermic reactions. (absorbs heat energy) –Forest fire = spontaneous exothermic reactions. (releases heat energy) ...
... naturally, the process is unaided. • Example: –Decomposition of dead matter = spontaneous endothermic reactions. (absorbs heat energy) –Forest fire = spontaneous exothermic reactions. (releases heat energy) ...
E/F Physical Science
... 1. Is the following sentence true or false? The new substances formed as a result of a chemical reaction are called products. 2. Circle the letter of each sentence that is correct for the chemical equation: C + O2 → CO2. a. Carbon and oxygen react and form carbon monoxide. b. Carbon and oxygen react ...
... 1. Is the following sentence true or false? The new substances formed as a result of a chemical reaction are called products. 2. Circle the letter of each sentence that is correct for the chemical equation: C + O2 → CO2. a. Carbon and oxygen react and form carbon monoxide. b. Carbon and oxygen react ...
Solute - St John Brebeuf
... because it breaks into ________ A substance made up of a NONMETAL and a NONMETAL is COVALENT, and will NOT form a conducting solution in water because it stays as a molecular compound. ...
... because it breaks into ________ A substance made up of a NONMETAL and a NONMETAL is COVALENT, and will NOT form a conducting solution in water because it stays as a molecular compound. ...
Week - Mat-Su School District
... 2. Avogadro’s Theory & mole concept 3. Kinetic Energy & temperature 4. Deviations fro the gas law b. Liquids & Solids i. Liquids & Solids from the Kinetic Molecular viewpoint ii. Phase diagrams iii. Changes in state (triple points) iv. Structure of solids, Lattice energy c. Solutions i. Types of sol ...
... 2. Avogadro’s Theory & mole concept 3. Kinetic Energy & temperature 4. Deviations fro the gas law b. Liquids & Solids i. Liquids & Solids from the Kinetic Molecular viewpoint ii. Phase diagrams iii. Changes in state (triple points) iv. Structure of solids, Lattice energy c. Solutions i. Types of sol ...
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.