Net Ionic Equations
... Example: H2 combining with O2 to form water: 2 H2 + O2 2H2O An electron is transferred from H to O: the H2 is oxidized and the O2 is reduced. We use the oxidation number (oxidation state) to keep track of electron shifts in chemical reactions. It is defined as “the charge which an atom appears to ...
... Example: H2 combining with O2 to form water: 2 H2 + O2 2H2O An electron is transferred from H to O: the H2 is oxidized and the O2 is reduced. We use the oxidation number (oxidation state) to keep track of electron shifts in chemical reactions. It is defined as “the charge which an atom appears to ...
Balancing reaction equations, oxidation state, and reduction
... Example: H2 combining with O2 to form water: 2 H2 + O2 → 2H2O An electron is transferred from H to O: the H2 is oxidized and the O2 is reduced. We use the oxidation number (oxidation state) to keep track of electron shifts in chemical reactions. It is defined as “the charge which an atom appears to ...
... Example: H2 combining with O2 to form water: 2 H2 + O2 → 2H2O An electron is transferred from H to O: the H2 is oxidized and the O2 is reduced. We use the oxidation number (oxidation state) to keep track of electron shifts in chemical reactions. It is defined as “the charge which an atom appears to ...
Section 1 Forming New Substances Chapter 9
... Chemical formulas of reactants are listed on the lefthand side of the equation. Products are listed on the righthand side of the equation. Reactants and products are separated by putting an arrow between them to show the direction of the reaction. Reactions at equilibrium will have arrows facing bot ...
... Chemical formulas of reactants are listed on the lefthand side of the equation. Products are listed on the righthand side of the equation. Reactants and products are separated by putting an arrow between them to show the direction of the reaction. Reactions at equilibrium will have arrows facing bot ...
Document
... Sample Exercise 2.6 Relating Empirical and Molecular Formulas Write the empirical formulas for (a) glucose, a substance also known as either blood sugar or dextrose, molecular formula C6H12O6; (b) nitrous oxide, a substance used as an anesthetic and commonly called laughing gas, molecular ...
... Sample Exercise 2.6 Relating Empirical and Molecular Formulas Write the empirical formulas for (a) glucose, a substance also known as either blood sugar or dextrose, molecular formula C6H12O6; (b) nitrous oxide, a substance used as an anesthetic and commonly called laughing gas, molecular ...
ATOMIC THEORY
... masses. Atoms of an element that are chemically alike but differ in mass are called ______________________ of the element. Because of the discovery of isotopes, scientists hypothesized that atoms contained still a third type of particle that explained these differences in mass. Calculations showed t ...
... masses. Atoms of an element that are chemically alike but differ in mass are called ______________________ of the element. Because of the discovery of isotopes, scientists hypothesized that atoms contained still a third type of particle that explained these differences in mass. Calculations showed t ...
Document
... It is important that atoms bond. Why? Because they need to bond in order to make _____________, _______________, and other more complex forms of matter. For example, if atoms didn’t bond, you would be quite thirsty all the time! Yes, ______________ is the result of the process of CHEMICAL bonding. T ...
... It is important that atoms bond. Why? Because they need to bond in order to make _____________, _______________, and other more complex forms of matter. For example, if atoms didn’t bond, you would be quite thirsty all the time! Yes, ______________ is the result of the process of CHEMICAL bonding. T ...
MIDTERM REVIEW UNIT 1: Mass/Measurement
... 9. Each chemistry teacher provides 6 test tubes to each lab group. In each class there are 12 lab groups, and the teacher has four classes. There are a total of 5 chemistry teachers. ...
... 9. Each chemistry teacher provides 6 test tubes to each lab group. In each class there are 12 lab groups, and the teacher has four classes. There are a total of 5 chemistry teachers. ...
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 ...
9182747 Chemistry Ja02
... 35 In a potential energy diagram, the difference between the potential energy of the products and the potential energy of the reactants is equal to the (1) heat of reaction (2) entropy of the reaction (3) activation energy of the forward reaction (4) activation energy of the reverse reaction ...
... 35 In a potential energy diagram, the difference between the potential energy of the products and the potential energy of the reactants is equal to the (1) heat of reaction (2) entropy of the reaction (3) activation energy of the forward reaction (4) activation energy of the reverse reaction ...
MidtermReview2012
... the think skills required to accurately answer questions. If you need more practice problems for an objective, start by reviewing your old tests! Ask for more! Why Study Like This? This packet will guide you to spend the MOST amount of your time focusing on the 1s. Once you understand that stuff, mo ...
... the think skills required to accurately answer questions. If you need more practice problems for an objective, start by reviewing your old tests! Ask for more! Why Study Like This? This packet will guide you to spend the MOST amount of your time focusing on the 1s. Once you understand that stuff, mo ...
Chemistry Revision Guide - Mr Cartlidge`s Science Blog
... When the liquids being distilled have similar boiling points, normal distillation can’t separate them completely but simply gives a purer mixture. In this case a fractionating column is used. This provides a large surface area for condensation meaning much purer ‘fractions’ are produced. The most im ...
... When the liquids being distilled have similar boiling points, normal distillation can’t separate them completely but simply gives a purer mixture. In this case a fractionating column is used. This provides a large surface area for condensation meaning much purer ‘fractions’ are produced. The most im ...
2005/6 - SAASTA
... The project offers learners in grades 10-12 an exciting opportunity to compete in the science arena with fellow learners from all the nine provinces and SADC countries, such as Namibia and Lesotho. The competition comprises an annual examination in science, and top learners and top schools stand a c ...
... The project offers learners in grades 10-12 an exciting opportunity to compete in the science arena with fellow learners from all the nine provinces and SADC countries, such as Namibia and Lesotho. The competition comprises an annual examination in science, and top learners and top schools stand a c ...
2202 Chapter 1 - Eric G. Lambert School
... B. Ionic Compounds - composed of a cation and an anion (usually metal and nonmetal) eg. NaCl Mg3N2 ...
... B. Ionic Compounds - composed of a cation and an anion (usually metal and nonmetal) eg. NaCl Mg3N2 ...
CHAPTER 1 CHEMICAL FOUNDATIONS 1 CHAPTER ONE
... assumed uncertainty is ±1 in the estimated digit. For glassware a, the volume would be estimated to the tenths place since the markings are to the ones place. A sample reading would be 4.2 with an uncertainty of ±0.1. This reading has two significant figures. For glassware b, 10.52 ±0.01 would be a ...
... assumed uncertainty is ±1 in the estimated digit. For glassware a, the volume would be estimated to the tenths place since the markings are to the ones place. A sample reading would be 4.2 with an uncertainty of ±0.1. This reading has two significant figures. For glassware b, 10.52 ±0.01 would be a ...
AP Chemistry Summer Assignment
... 52. Iron is biologically important in the transport of oxygen by red blood cells from the lungs to the various organs of the body. In the blood of an adult human, there are approximately 2.60 x 10 13 red blood cells with a total of 2.90 g of iron. On the average, how many iron atoms are present in e ...
... 52. Iron is biologically important in the transport of oxygen by red blood cells from the lungs to the various organs of the body. In the blood of an adult human, there are approximately 2.60 x 10 13 red blood cells with a total of 2.90 g of iron. On the average, how many iron atoms are present in e ...
the properties and structure of matter
... • There is so many different kinds of matter, which are organized by their composition and properties • Composition - the types and amounts of atoms that make up a sample of matter • Properties - the characteristics that give each substance a unique identity ...
... • There is so many different kinds of matter, which are organized by their composition and properties • Composition - the types and amounts of atoms that make up a sample of matter • Properties - the characteristics that give each substance a unique identity ...
s_block - ilc.edu.hk
... Mg reacts with steam but not water. Mg(s) + H2O(g) MgO(s) + H2(g) Be does not react with water and steam. ...
... Mg reacts with steam but not water. Mg(s) + H2O(g) MgO(s) + H2(g) Be does not react with water and steam. ...
Balancing Chemical Equations
... Because of the law of conservation of matter, these equations must be balanced. In other words, the number of atoms of each element must be conserved. For example, look at the reaction of hydrogen and oxygen to produce water: H2 + O2 → H2O. The reactant side of the equation contains two atoms of hyd ...
... Because of the law of conservation of matter, these equations must be balanced. In other words, the number of atoms of each element must be conserved. For example, look at the reaction of hydrogen and oxygen to produce water: H2 + O2 → H2O. The reactant side of the equation contains two atoms of hyd ...
Chapter 2
... Law of Multiple Proportions: Elements can combine in different ways to form different substances, whose mass ratios are small whole-number multiples of each other. ...
... Law of Multiple Proportions: Elements can combine in different ways to form different substances, whose mass ratios are small whole-number multiples of each other. ...
2 - TestBankTop
... atoms being the same (oxygen). Since each "ball" represents an individual atom, the three models on the left can be eliminated since they don't contain the correct number of atoms. Keeping in mind that balls of the same color represent the same element, only the model on the far right contains two e ...
... atoms being the same (oxygen). Since each "ball" represents an individual atom, the three models on the left can be eliminated since they don't contain the correct number of atoms. Keeping in mind that balls of the same color represent the same element, only the model on the far right contains two e ...
The Chemical Context of Life
... About 25 of the 92 elements are essential to life (essential elements) Carbon, hydrogen, oxygen, and nitrogen make up about 96% of living matter Most of the remaining 4% consists of calcium, phosphorus, potassium, and sulfur Trace elements are those required by an organism in only minute qua ...
... About 25 of the 92 elements are essential to life (essential elements) Carbon, hydrogen, oxygen, and nitrogen make up about 96% of living matter Most of the remaining 4% consists of calcium, phosphorus, potassium, and sulfur Trace elements are those required by an organism in only minute qua ...
Atoms, Molecules, and Ions
... atoms being the same (oxygen). Since each "ball" represents an individual atom, the three models on the left can be eliminated since they don't contain the correct number of atoms. Keeping in mind that balls of the same color represent the same element, only the model on the far right contains two e ...
... atoms being the same (oxygen). Since each "ball" represents an individual atom, the three models on the left can be eliminated since they don't contain the correct number of atoms. Keeping in mind that balls of the same color represent the same element, only the model on the far right contains two e ...
Lecture 7
... they are all strong reducing agents. Going down the group the outer electrons get further from the nucleus and so are more weakly held. This is because of the greater distance between the nucleus and the outer electron and the increased shielding of the nucleus by the inner shells of electrons. So r ...
... they are all strong reducing agents. Going down the group the outer electrons get further from the nucleus and so are more weakly held. This is because of the greater distance between the nucleus and the outer electron and the increased shielding of the nucleus by the inner shells of electrons. So r ...
System International Base Units
... Lewis dot structure for period 2 elements Notice dots equal their number of valence electrons and do not pair up until after all four quadrants have at least one dot ...
... Lewis dot structure for period 2 elements Notice dots equal their number of valence electrons and do not pair up until after all four quadrants have at least one dot ...