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Final Review: L17-25
Final Review: L17-25

... 1. A gas is detected. 2. A precipitate is formed. 3. A permanent color change is seen. ...
C2_revision_slides_V3_+_questions_+_MS_-_H[1]
C2_revision_slides_V3_+_questions_+_MS_-_H[1]

... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
Ionic bonding
Ionic bonding

... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
C2 revision slides V3 + questions + MS
C2 revision slides V3 + questions + MS

... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
Ionic bonding - Animated Science
Ionic bonding - Animated Science

... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
General Chemistry
General Chemistry

... When an atom or molecule gains electrons, it becomes negatively charged. For example when Cl gains an electron it becomes Cl-. Negatively charged ions are called anions. An atom or molecule can lose more than one electron! Predicting Ionic Charge The number of electrons an atom loses is related to i ...
Chapter 8: Periodic Properties of the Elements
Chapter 8: Periodic Properties of the Elements

... a. Ei of Be is larger than B and that of Mg is larger than Al. An explanation is that Be and Mg lose an s2 electron while B and Al are losing the p1 electron. An s electron spends more time closer to the nucleus and is therefore harder to remove. Additionally, the p electrons are shielded somewhat b ...
Year 9 Science revison _15-16_ end of year CHEM
Year 9 Science revison _15-16_ end of year CHEM

... h) Rubidium loses 1 electron when it forms a rubidium ion. i) why does it lose 1 electron ? it has 1 electron in the outer shell. It loses that electron (in a chemical reaction) to have a full outer shell and become “stable” like the noble gases. You know that it loses 1 electron…..because it’s in g ...
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... Molarity, or moles per liter (M) A mole of an element or compound is equal to its atomic or molecular weight (sum of atomic weights) in grams One mole of any substance contains exactly the same number of solute particles (6.02 x 1023) 37. Colloids and Suspensions Colloids, or emulsions, are heteroge ...
CHAPTER 1 Practice Exercises 1.1 12.3 g Cd 1.3 26.9814 u 1.5
CHAPTER 1 Practice Exercises 1.1 12.3 g Cd 1.3 26.9814 u 1.5

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c2 atomic structure f pmh
c2 atomic structure f pmh

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Chapter3 Solutions
Chapter3 Solutions

... ions of opposite charge in a lattice. To speak of intermolecular forces in ionic compounds is to imply the existence of molecules in the compounds. It would be better to speak of forces between the ions or interionic forces. 12. A covalent bond exists between atoms of the same or almost the same ele ...
Unit Description - Honors Chemistry
Unit Description - Honors Chemistry

... orbital diagrams of the elements (5.3)  Relate valence electrons to Lewis (electron dot) structures (5.3)  Describe the ground-state arrangement of electrons in atoms of any element using orbital notation, electron configuration, and Lewis structures (5.3)  Identify electron configuration that co ...
honors chem 6 day review packet
honors chem 6 day review packet

... The Noble gases are stable because they have ___ ______________ ____________. Elements are placed in order of ______________ _______________ and placed in groups according to their ___________________ __________________. Rows = ______________ =___________ __________ _______ Columns =______________ = ...
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... A. If N/Z ratio is too high, there are too many protons and the nuclide will undergo positron emission or electron capture. B. If N/Z ratio lies somewhere below 1, the nuclide is stable. C. If N/Z ratio is too low, there are too many neutrons and the nuclide will undergo beta decay. D. The valley of ...
Chemistry Midterm Review 2006
Chemistry Midterm Review 2006

... 3. Identify which ones have dipole-dipole forces? PBr3, N2, CF4, HBr, H2O 4. Identify which ones have London dispersion forces? , N2, CF4, HBr, SO2 5. Identify which ones have hydrogen bonding? HCl,, H2, HBr, H2O, CH4 6. Define the physical properties of Viscosity, Surface Tension, Boiling Point and ...
Chemistry Readings
Chemistry Readings

... When a metal reacts with a non-metal, the metal will lose electrons to form a positive ion while the non-metal will gain electrons forming a negative ion. Together they form an ionic compound. This is the reaction between Magnesium and Oxygen. Magnesium is in Group IIA. A Magnesium atom will lose 2 ...
Ionic bonding
Ionic bonding

... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
C2 Revision Quick Questions FT
C2 Revision Quick Questions FT

... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
C2 Revision Quick Questions FT
C2 Revision Quick Questions FT

... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
C2 revision slides V3 + questions + MS – F
C2 revision slides V3 + questions + MS – F

... increases number of collisions and increases rate Temperature: Particles have more energy and move faster and collide more often. More particles have energy greater than the activation energy so more successful collisions Catalyst: Catalysts change the rate of chemical reactions but are not used up ...
Topic 10: Making Electricity
Topic 10: Making Electricity

... terms of the chemicals being used up in the reaction 4 State that some batteries are rechargeable, eg the lead-acid battery 5 Explain that ammonium chloride in a cell is an example of an electrolyte 6 Explain that the purpose of the electrolyte is to complete the circuit 7 State that electricity can ...
Chemistry - Napa Valley College
Chemistry - Napa Valley College

...  Neutron mass and proton mass are almost identical and are measured in daltons (or ...
Matter and Energy
Matter and Energy

... ◦ Electrons – found orbiting nucleus, - charge, approximately 1/1836 AMU ...
Practice MSL Multiple Choice 1. Compared to the charge and mass
Practice MSL Multiple Choice 1. Compared to the charge and mass

... The sign of H is positive, and the products have less potential energy than the reactants. The sign of H is positive, and the products have more potential energy than the reactants. The sign of H is negative, and the products have less potential energy than the reactants. The sign of H is negative, ...
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Ion

An ion (/ˈaɪən, -ɒn/) is an atom or a molecule in which the total number of electrons is not equal to the total number of protons, giving the atom or molecule a net positive or negative electrical charge.Ions can be created, by either chemical or physical means, via ionization. In chemical terms, if a neutral atom loses one or more electrons, it has a net positive charge and is known as a cation. If an atom gains electrons, it has a net negative charge and is known as an anion. An ion consisting of a single atom is an atomic or monatomic ion; if it consists of two or more atoms, it is a molecular or polyatomic ion. Because of their electric charges, cations and anions attract each other and readily form ionic compounds, such as salts. In the case of physical ionization of a medium, such as a gas, what are known as ""ion pairs"" are created by ion impact, and each pair consists of a free electron and a positive ion.
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