Science final 6-10
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Created by:
bccrusader60 on June 7, 2010
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137 terms
Terms | Definitions |
|---|---|
 in what group of the periodic tabe is the most reactive elements? | s block |
| what group of the periodic table do the alkali metals belong to | 1a |
| what group of the periodic table do the alkaline earth metals belong to | 2a |
| what is the typical charge of the alkali metals | plus 1 |
| what is the typical charge of the alkaline earth metals | plus 2 |
| which of the following is not a alkaline earth metal? A.cesium B.calcium C.barium D.beryllium | cesium |
| which of the following is not a alkali metal A. strontium B. francium C.lithium D.rubidium | strontium |
| An alloy is? | mixture of metals |
| in what block are the transition metals found? | d block |
| what are the coinage metals | gold,silver,copper |
| the best conductor of electricity is | silver |
| how many Karats is pure gold | 24 |
| the elements in 4f are called | lanthanides |
| the elements in 5f are called | actinides |
| most of earths atmosphere is | nitrogen |
| the most abundant element on earth | oxygen |
| the most abundant element in the universe | hydrogen |
| The physical state of nearly all ionic compounds at room temp | solid |
| ionic compounds are normally | formed when a metal transfers its valence electrons to a nonmetal |
| Which atom does not have an octet of electrons? | 0- |
| in an ionic bond how does nitrogen obtain an octet | gain 3 electrons |
| what is the lewis dot diagram for florine | 2 on 3 sides and 1 on 1 side |
| Monatomic anions have the suffix | ide |
| how does a covalant bond differ from an ionic bond | an ionic bond is the transfer of electrons and a covalent bond is a sharing of electrons |
| what s a covalent bond? | when atoms share electrons |
| in a double bond how many atoms are shared | 4 |
| if a bond is classified as non polar what is its electro negativity | .5-2 |
| what is the name of (NH4)3PO4 | ammonium phosphate |
| what is the name of the compound FeSO4 | iron 2 sulfate |
| what is the name of NaC2H3O2x9H2O | sodium acetate nonahydrate |
| what theory is used to find the shapes of molecules | VSEPR theory |
| what does the structural formula reveal about chemical bonds? | their presence and type |
| which of the following do the ball and stick model reveal about chemical bonds | There arrangement in space, presence, and type |
| what shape is carbon dioxide? | linear |
| what is the bond angle of carbon dioxide | 180 degrees |
| what shape does a water molecule have | bent |
| what is the bond angle of water | 105 degrees |
| in a pyrimadal molecule how many unshared electrons are there? | one |
| hybrid orbitals are | mixed orbitals |
| how do the lengths of bonds differ? | single bonds are longest |
| what determines to polarity of a molecule? | shape and electro negativity |
| polarity helps determine the shape of | protein |
| 4 |  which molecule is tetrahedral? |
| 5 | which molecule is trigonal planer? |
| 3 | which molecule is pyrimidal |
| x,y,z |  see diagram- rank the electro negativities |
| the more electro negative atom | toward what atom do the arrow type symbols in picture always point? |
| what is true about a chemical reaction | new substances must form |
| what are the reactants of H2O | hydrogen and oxygen |
| in a chemical equation what takes the replaces the reacts? | plus sign |
| magnesium reacts with chlorine to produce magnesium chloride | mg +cl2=mgcl2 |
| which is true about a balanced equation | the total number of atoms remains the same |
| what needs to be true in a balanced chemical equation | it must be balanced |
| what number is assumed to be next to the equation | 1 |
| when balancing an equation what are you allowed to do | add coefficients |
| the symbol s in a formula stands for | solid |
| what symbol means water solution | (AQ) |
| what number would you put in front of Na to balance the equation | 2 |
| in what kind of reaction do two or more reactants come together to form a single product | direct combination |
| in what kind of reaction does an uncombined element and element | single replacement |
| what kind of reaction is represented by the equation | double replacement |
| the activity series ranks element in order of | ability to replace one another in compounds |
| given the reaction what can you conclude | copper is less reactive than magnesium |
| the scale for atomic mass is based on the mass of | carbon 12 |
| the atomic mass of a unit is expressed in | amu |
| what is the symbol for avragados number | n |
| in what unit is molar mass expressed | g/mol |
| what is the standard temperature | 0 degrees |
| what is the standard pressure | 1 atmosphere |
| the mas of each element to the entire compound is | percentage composition |
| what is the empirical formula of water | h2o |
| what is the empirical formula of c2cl6 | ccl3 |
| what is the empirical formula of ch | need more info |
| see diagram- what are the chemical formulas from left to right | no, o2, no2 |
| see diagram- what is the formula equation | no+o2=no2 |
| see diagram- which reaction is a double replacement | reaction b |
| see diagram- what would be displaced if a strip of tin metal were added | lead and copper |
| The scale for expressing atomic masses is based on the mass of? | Carbon-12 |
| the sum of the atomic masses of all the atoms in a compound is called the ? | Formula Mass |
| The number of atoms in one mole of an element is equal to ? | Avogadro's Number |
| Standard Temperature is? | 0 degress Celsius |
| One mole of an ionic compond contains 6.02x10^23? | Formula Units |
| The formula that shows the actual number of atoms of each element in a compound? | The Molecular Formula |
| How is mole mass abbreviated? | "M" |
| the sum of the percentages in the percent composition of a substance equals? | 100 |
| What is empirical formula of water? | H20 |
| The atomic mass of individual atoms is generall express in which unit? | AMU |
| In a reaction in which hydrogen reacts with oxygen to produce water, which substance are the reactants? | Both Hydrogen and Oxygen |
| In a chemical Equation, the symbol that takes the pace of the words reacts is a(n) | Plus sign |
| When oxygen is available, sulfer dioxide is produced from the burning of sulfer. What word equation represents this reaction? | Sulfur + Oxygen --> Sulfer dioxide |
| How many atoms of oxygen are represented in 2 Ca(NO3)2 | 12 |
| What is written in front of chemical formulas to balance chemical equations? | Coeffecients |
| In a ____________reaction, thre is only one product | Direct |
| A substance that enters into a chemical reaction is called? | Reactant |
| What type of equation gives the names of the reactants and the products | Word Equations |
| What type of equations are written to describe chemical reactions? | Chemical Equations |
| What type of Chemical Reaction is show by this equation? Zn+CuSO₄--->ZnSO₄ + Cu | Single Replacement Chemical reaction |
| CH₄ ----> C + 2H₂ | Decomposition Chemical Reaction |
| S + Cl₂ --->SCL₂ | Direct Chemical Reaction |
| Write a Balanced Chemical Formula? Chlorine Reacts with Potassium iodide to produce potassium chloride and iodine? | Cl₂ + 2KI ---> 2KCl + I₂ |
| Write a balanced Chemical Formula? Magnesium reacts with Hydrochloric Acid (HCI) to produce hydrogen and magnesium chloride? | Mg + 2HCI ---> H₂ + MgCl₂ |
| White a Balanced Chemical Formula? Barium chloride reacts with sodium hydroxide to produce sodium chloride and barium hyroxide? | 2BaCl₂ + 4Na(OH) ---> 4NaCl+ 2Ba(OH)₂ (can be simplified) |
| What theory is used to account for the shapes of molecules? | VSEPR Theory |
| In a molecule of carbon dioxide, what kinds of bonds connect the carbon atom to the 2 oxygen atoms? | Two Double bonds |
| What shape does a carbon dioxide molecule have? | linear |
| What shape does a water molecule have? | bent |
| In a Pyramidal Molecule, how many unshared pairs of valence electrons does the central atom have? | One |
| In a tetrahedral molecule, how many unshared pairs of valence electrons does the central atom have? | None |
| How many unshared pairs of valence electrons does the central atom in a bent molecule have? | Two |
| Hybrid orbitals are | Mixed Orbitals |
| How do the lenghts of single, double, and triple bonds between the same kinds of atoms compare? | Single bonds are the longest |
| What helps determine the shape of a large molecule | Polarity |
| A dipole is what kind of milecule | Polar |
| What kind of molecule has one pair of unshared electrons around the central atom? | Pyrimidal |
| In a small molecule, atomic orbitals combine to for what kind of orbitals? | Hybrid |
| A single bond between two atoms is Shorter or longer than a double bond between the same two atoms? | Longer |
| For each molecule name the A) Shape B) Bond Angle C) Hybrid Orbital D)Polar or Non Polar? PCl₃ | a) Pyrimadal b)107 c) Sp³ D) Polar |
| For each molecule name the A) Shape B) Bond Angle C) Hybrid Orbital D)Polar or Non Polar? H₂S | A) Bent B) 105 C) Sp³ D) Polar |
| For each molecule name the A) Shape B) Bond Angle C) Hybrid Orbital D)Polar or Non Polar? BFl₂ | A) Trigonal Planar B) 120 C) Sp² D) Non polar |
| For each molecule name the A) Shape B) Bond Angle C) Hybrid Orbital D)Polar or Non Polar? NH₂Cl | A) Pyrimadal B) 107 C) Sp³ D) Polar |
| A positively charged ion is formed when? | and atom loses electrons |
| Ionic compounds are normally? | formed when metal transfers its valance electrons to a non-metal |
| Does O- have and Octet of electrons? | No |
| The formulas of the oxide and nitrate ions are respectively? | O²- and NO₃- |
| Monatomic anions are named with the suffix? | ide |
| How does a covalent bod differ from an ionic bond? | An Ionic bond is the transfer of electrons and a covalent bond is a sharing of electrons |
| For the diatomic molecule Cl₂ how many electron(s) does each chlorine atom share with the other chlorine atom so that each has an octet? | 1 |
| In a double bond between two atoms, the number of shared electrons is? | 4 |
| The correct name for the hydrate FeSO₄ * 4H₂0? | Iron(II) Sulfate Tetrahydrate |
| A group of atoms united by a ________Bonds is called a molecule? | Covalent |
| Lewis structures use a triple dash to represent a ______bond? | Triple |
| Does the name of the Cation usually come first in the name of an ionic compund | yes |
| Negatively charged ions are called | Anions |
| __________ions consist of more than one atom? | Polyatomic |
| White a chemical formula for Sodium Phosphide | Na¹ p³ Na₃ p |
| Write a chemical formula for Copper(II) Hydroxide | Cu²(OH)-¹ Cu(OH)² |
| Name the following Ionic compound? BaF₂ | Barium Floride |
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