Unit 1
... • The electrons of the two atoms are both negatively charged and repel each other. • When a collision takes place with sufficient energy to form a compound, the outer energy levels overlap and the atoms share the electrons. • The overlap area has an increase in negative charge, which is strongly at ...
... • The electrons of the two atoms are both negatively charged and repel each other. • When a collision takes place with sufficient energy to form a compound, the outer energy levels overlap and the atoms share the electrons. • The overlap area has an increase in negative charge, which is strongly at ...
Calculations with Chemical Formulas and Equations
... • The limiting reactant is the reactant present in the smallest stoichiometric amount – In other words, it’s the reactant you’ll run out of first (in this case, the H2) ...
... • The limiting reactant is the reactant present in the smallest stoichiometric amount – In other words, it’s the reactant you’ll run out of first (in this case, the H2) ...
Atomic Model Unit Plan with SCTS
... Science for All Americans: - The basic premise of the modern theory of matter is that the elements consist of a few different kinds of atoms—particles far too tiny to see in a microscope—that join together in different configurations to form substances. There are one or more—but never many—kinds of ...
... Science for All Americans: - The basic premise of the modern theory of matter is that the elements consist of a few different kinds of atoms—particles far too tiny to see in a microscope—that join together in different configurations to form substances. There are one or more—but never many—kinds of ...
File - Mr Weng`s IB Chemistry
... • Thermoplastics soften when heated and harden when cooled. • A thermosetting polymer is a prepolymer in a soft solid or viscous state that changes irreversibly into a hardened thermoset by curing. • Elastomers are flexible and can be deformed under force but will return to nearly their original sha ...
... • Thermoplastics soften when heated and harden when cooled. • A thermosetting polymer is a prepolymer in a soft solid or viscous state that changes irreversibly into a hardened thermoset by curing. • Elastomers are flexible and can be deformed under force but will return to nearly their original sha ...
Chapter 22 REDOX
... 1 Balance the redox equation using the smallest wholenumber coefficients. [1] 2 As this voltaic cell operates, the mass of the Al(s) electrode decreases. Explain, in terms of particles, why this decrease in mass occurs. [1] ...
... 1 Balance the redox equation using the smallest wholenumber coefficients. [1] 2 As this voltaic cell operates, the mass of the Al(s) electrode decreases. Explain, in terms of particles, why this decrease in mass occurs. [1] ...
CHEMISTRY Periodic Table of the Elements
... What does the phenolphthalein indicate? What does this mean? Based on part B, what other substance do you think was produced? Why? Rate these 3 metals in order of their reactivity with the water. Write full electron configurations for Li, Na and K. How many electrons do each of them have in their ou ...
... What does the phenolphthalein indicate? What does this mean? Based on part B, what other substance do you think was produced? Why? Rate these 3 metals in order of their reactivity with the water. Write full electron configurations for Li, Na and K. How many electrons do each of them have in their ou ...
Module 3: Physical Science
... Potential energy (gravitational) indicates how much energy is stored as a result of the position or the configuration of an object. For example, water at the top of a waterfall possesses potential energy. ...
... Potential energy (gravitational) indicates how much energy is stored as a result of the position or the configuration of an object. For example, water at the top of a waterfall possesses potential energy. ...
Essential Standard: 8.P.1 Understand the properties of matter and
... Elements are pure substances that cannot be changed into simpler substances. Elements are composed of one kind of atom. Compounds are pure substances that are composed of two or more types of elements that are chemically combined. Compounds can only be changed into simpler substances called elements ...
... Elements are pure substances that cannot be changed into simpler substances. Elements are composed of one kind of atom. Compounds are pure substances that are composed of two or more types of elements that are chemically combined. Compounds can only be changed into simpler substances called elements ...
- Angelo State University
... • What makes elements different from each another is the number of protons in their atoms, called the atomic number (Z). All atoms of the same element contain the same number of protons. – The number of protons determines the number of electrons in a neutral atom. – Since most of the volume of the a ...
... • What makes elements different from each another is the number of protons in their atoms, called the atomic number (Z). All atoms of the same element contain the same number of protons. – The number of protons determines the number of electrons in a neutral atom. – Since most of the volume of the a ...
Chapter 2
... in a chemical reaction. Elements can only be converted into other elements in nuclear reactions. 3. All atoms of an element have the same number of protons and electrons, which determines the chemical behavior of the element. Isotopes of an element differ in the number of neutrons, and thus in mass ...
... in a chemical reaction. Elements can only be converted into other elements in nuclear reactions. 3. All atoms of an element have the same number of protons and electrons, which determines the chemical behavior of the element. Isotopes of an element differ in the number of neutrons, and thus in mass ...
S8 + ___ F2 → ___ SF6 - Canvas by Instructure
... keep track of electrons in REDOX reactions. Oxidation numbers are SIMILAR to charge, but ...
... keep track of electrons in REDOX reactions. Oxidation numbers are SIMILAR to charge, but ...
Atoms Intro Notes
... Summary of BIG IDEAS • All objects that have mass and take up space are made of matter • All matter is made of atoms • Atoms are made up of positively charged protons and neutrally charged neutrons. Protons and neutrons stick together in the nucleus (center) of the atom • Negatively charged electro ...
... Summary of BIG IDEAS • All objects that have mass and take up space are made of matter • All matter is made of atoms • Atoms are made up of positively charged protons and neutrally charged neutrons. Protons and neutrons stick together in the nucleus (center) of the atom • Negatively charged electro ...
Chapter 4 Atomic Structure Notes
... When an atom has the same number of protons as electrons. (+) = (-) if the atom is neutral then it has not lost or gained electrons. Atomic charge- an atom will have a charge when the protons and the electrons are not equal in number. Atoms will lose or gain electrons to ...
... When an atom has the same number of protons as electrons. (+) = (-) if the atom is neutral then it has not lost or gained electrons. Atomic charge- an atom will have a charge when the protons and the electrons are not equal in number. Atoms will lose or gain electrons to ...
atoms - World of Teaching
... In this computer activity you will be creating your own Study Guide. Feel free to complete this lesson at your own pace. Please follow all instructions carefully. Ask your teacher if you need any help. ...
... In this computer activity you will be creating your own Study Guide. Feel free to complete this lesson at your own pace. Please follow all instructions carefully. Ask your teacher if you need any help. ...
Atom and Nuclear Powerpoint
... The values of E (the applied electric field), m (the mass of a drop which was already calculated by Millikan), and g (the acceleration due to gravity), are all known values. Unknown charge on the drop, q m·g=q·E Millikan repeated the experiment numerous times varying the strength of the x-rays ioniz ...
... The values of E (the applied electric field), m (the mass of a drop which was already calculated by Millikan), and g (the acceleration due to gravity), are all known values. Unknown charge on the drop, q m·g=q·E Millikan repeated the experiment numerous times varying the strength of the x-rays ioniz ...
Cl -1
... I. Rules for Assigning Oxidation Numbers 1. The oxidation number of any uncombined element is 0. 2. The oxidation number of a monatomic ion equals the charge on the ion. 3. The more-electronegative element in a binary compound is assigned the number equal to the charge it would have if it were an i ...
... I. Rules for Assigning Oxidation Numbers 1. The oxidation number of any uncombined element is 0. 2. The oxidation number of a monatomic ion equals the charge on the ion. 3. The more-electronegative element in a binary compound is assigned the number equal to the charge it would have if it were an i ...
Atoms, Isotopes, and Ions - Science Take-Out
... 5. Make a model of a sulfur atom. Then make a sulfur ion (S2-). Use a “+” sign for each proton, an “n” for each neutron and a “–” sign for each electron. ...
... 5. Make a model of a sulfur atom. Then make a sulfur ion (S2-). Use a “+” sign for each proton, an “n” for each neutron and a “–” sign for each electron. ...
Chemical Building Blocks Chapter One
... Characteristic Property: a quality of a substance that never changes and can be used to identify the substances (pg. 15) Boiling Point: the temperature at which a substance changes from a liquid to a gas (pg. 16) Physical Change: a change in a substance that does not change its identity; for example ...
... Characteristic Property: a quality of a substance that never changes and can be used to identify the substances (pg. 15) Boiling Point: the temperature at which a substance changes from a liquid to a gas (pg. 16) Physical Change: a change in a substance that does not change its identity; for example ...
atomic - SandersScienceStuff
... 6. Bohr (1913)- suggested electrons must move around in well-defined orbits or energy levels a. His experiments suggested that electrons reside at different energy levels because it took more (or less) energy to knock them loose from an atom *Lets mark this for later: Bohr: planetary orbit of the el ...
... 6. Bohr (1913)- suggested electrons must move around in well-defined orbits or energy levels a. His experiments suggested that electrons reside at different energy levels because it took more (or less) energy to knock them loose from an atom *Lets mark this for later: Bohr: planetary orbit of the el ...
Gen Chem Final--review problems Fall 2006
... For the precipitation reaction/s above in problem 1, please add the appropriate ‘state’ (i.e. solid or aq) to each species. For the oxidation/reduction reaction/s above, please identify the species that is being oxidized and the species being reduced and assign oxidation numbers to each atom. For th ...
... For the precipitation reaction/s above in problem 1, please add the appropriate ‘state’ (i.e. solid or aq) to each species. For the oxidation/reduction reaction/s above, please identify the species that is being oxidized and the species being reduced and assign oxidation numbers to each atom. For th ...