| A | B |
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| True or False? The correct Chemical Symbol for phosphorus is Pr. | False, phosphorus's symbol is just P |
| True or False? The Chemical symbol for palladium is Pd? | True |
| True or False? Platium's chemical symbol is Pt . | True |
| What is the CORRECT ( remember capital and small case lettering DO matter in chemical symbols) chemical symbol for the element lead? | Pb |
| What is the CORRECT ( remember capital and small case lettering DO matter in chemical symbols) chemical symbol for the element potassium? | K |
| What is the CORRECT ( remember capital and small case lettering DO matter in chemical symbols) chemical symbol for the element copper? | Cu |
| What is the CORRECT ( remember capital and small case lettering DO matter in chemical symbols) chemical symbol for the element carbon? | C |
| What is the CORRECT ( remember capital and small case lettering DO matter in chemical symbols) chemical symbol for the element cobalt? | Co |
| What is the CORRECT ( remember capital and small case lettering DO matter in chemical symbols) chemical symbol for the element calcium? | Ca |
| What is the CORRECT ( remember capital and small case lettering DO matter in chemical symbols) chemical symbol for the element cesium? | Cs |
| True or false? Metals are good conductors of heat. | True |
| True or false? Metals have a identifying characteristic of being malleable. | True |
| True or false? One cvharacteristic of metals is that metals are ductile. | True |
| True or false? Metals are generally lustrous, helping one to identify or verify an element is metal or not. | True, most metals have a luster to them |
| True of Fasle? Metals, being found to the left of the gases on the periodic table, tend to pick up electrons during a chemical reaction. | False, metals tend to form metal cations by losing electrons and gaining charge, not electrons |
| True or false? Nonmetals are poor conductors of heat. | True |
| True or false? Nonmentals tend to bond with one another by formation of covalent bonds. | True |
| True or False? Nonmetals tend to form negative ions in chemical reactions with metallic substances. | True |
| True or False? Nonmetals do not share the lustrous (shiny) characteristic with metals. | True, nonmetals are not shiny (nonlustrous) |
| True or False? Nonmetals appear in the upper left-hand corner of the Periodic Table of elements . | False, nonmetals (gases) are found on the very far RIGHT or far upper right portion of the periodic table. |
| True or False? Graphite and diamonds are forms of elemental carbon. | True BUT there is another form of elemental carbon as well---that is buckminsterfullerene. |
| True or False? Granite, diamonds, and uckminsterfullerene are forms of elemental carbon. | TRUE, each is a form of elemental form of carbon |
| True or False? Graphite and buckminsterfullerene are forms of elemental carbon. | TRUE, but not only graphite and buckminsterfullerene... Diamond is also an elemental form of carbon. |
| True or False? Diamonds, graphite, and carbonite are three elemental forms of carbon. | FALSE, although diamonds and graphite are forms of elemental carbon, carbonite is NOT an elemenetal form of carbon |
| What metals form cations with varying positive charges? | Transitional Metals |
| What do we call a species with 12 protons and 10 electrons? | According to the periodic table, any element with 12 protons must be a form of magnesium.Since there are only 10 electrons discussed, the stable neutral magnesium element must of LOST 2 electrons, thus creating a net POSITIVE two(2+) charge for this species.Therefore, this species must be Mg^2+ ( that is Mg with the 2+ in the SUPERSCRIPT indicating CHARGE) |
| What is the correct naming for the substance of LiCl? | lithium chloride....It is not appropiate to call something MONO- if no other possible forms ions of the cation portion of substance can reside within the chemical formula.In this case, the lithium portion will ALWAYS and only can be 1+ charge, so no need to state mono- preceeding the naming of the cation. |
| What is the chemical formula for the substance iron(II) oxide ? | FeO , because the oxygen (as an anion) can only be of a -2 charge, therefore the iron portion MUST be a cation of 2+ charge, hence the stock naming of iron(II) oxide. |
| What is the correct naming of the cation of Ca^2+ ( that is a Ca with the 2+ in the SUPERSCRIPT indicating the positive two charge) ? | calcium ion.... Recall that cations of elementals RETAIN the elemental name irregardless of the magnitude of the positive charge. |
| Ca(HSO4)2 is the chemical formula of what substance? | Calcium bisulfate |
| What is the correct formula for lead(II) nitrate ? | Pb(NO3)2 |
| What is the correct formula for ammonium perchlorate? | NH4ClO4 |
| What is the correct name for the chemical formula of (PO4)^3- ? ( that is a negative 3 charged ion of PO4 {which has 4 in subscripts of oxygen} ) | phosphate ion |
| What is the chemical formula for cyanic acid ? | HCN ....Recall that CN is cyanide--a very DEADLY posion, and also recall that most acids have at least one addition hydrogen attached, thus HCN which can be viewed as H(CN)--many mistakingly call this hydrogen cyanide |
| Is HC2H3O2 and H4C2O2 both correct chemical formulas for acetic acid? | Yes, however it is more accepted to utilize HC2H3O2, helping one to clearly notate that it is of an ACIDIC form. |
| Is the correct formula for bromic acid HBr? | No, this is NOT the correct chemical formula for bromic acid. |
| The correct chemical formula for sulfurous acid is what? | H2SO4 , where both the 2 and the 4 are SUBSCRIPTED values. |
| An aqueous solution of HNO2 is called what? | Nitrous Acid |
| An aqueous solution of Chloric Acid has what chemical formula? | HClO3 where the three(3) is SUBSCRIPTED |
| Is NH4Br called ammonium bromide? | YES it is |
| Is the correct chemical formula of potassium carbonate K2CO3 ? | Yes it is |
| Is BaPO4 the correct chemical formula for barium phosphate? | No it is NOT. |
| Give the chemical formula for copper(I) chloride. | CuCl |
| Name the substance MnO2 . | manganese(IV) oxide |
| Name the substance FeSo4 | iron(III) sulfate |
| Name the substance NaC2H3O2 | sodium acetate |
| Name the substance KNO2 | potassium nitrite |
| Name the substance Ca(OH)2 | calcium hydroxide |
| Name the substance NiCO3 | nickel(II) carbonate |
| Name the substance (NO3)^1- . ( that is a 3 in SUBSCRIPTS of oxygen, and a -1 in the SUPERCRIPTS of the whole chemical formula indicating the OVERALL NET CHARGE of substance is -1) | nitrate ion |
| Name the substance Al2O3 | alumunium oxide |
| Name the substance (NH4)^+ . ( that is a subscripted 4 and a SUPERCRPITED + ) | ammonium ion |
| Name the substance HCLO4 | perchloric acid |
| Name the substance CuBr2 | copper(II) bromide |
| In one formula unit of Ca3(PO4)2 , how many total atoms are there? ( the numbers here are all SUBSCRIPTED values) | There are 13 total atoms in one formula unit of Ca3(PO4)2...Of the 13 atoms, three(3) are Ca , two(2) are P, and the remaining eight(8) are O. |
| Arsenopyrite is a mineral made up of As , Fe , and S . Classify the three(3) components of the mineral arsenopyrite as being metal, nonmetal or metaloid. | Obviously Fe is a metal being located on far left of periodic table. Sulfur, S , is a NONMETAL (or gas) being located on far RIGHT of table. Arsenic reside JUST to right of the staggered STEPLIKE line separating nonmetals and transitional metals.Being that arsenic is actually ON the border, it is called a metalloid. |
| Name Al2(SO4)3 ( all numbers are subscripts here) | aluminum sulfate |
| Name NH4NO3 ( both numbers are SUBSCRIPTS) | ammonium nitrate |
| Name NaH | sodium hydride |
| Name K2Cr2O7 ( each number is a SUBSCRIPT) | potassium dichromate |
| Name CCl4 ( the 4 is SUBSCRIPTED) | carcon tetrachloride |
| Name HNO3 ( 3 is SUBSCRIPTED) | Nitric Acid |
| Name N2O3 ( the 2 and 3 are BOTH SUBSCRIPTS) | dinitrogen trioxide |
| Name SnI2 ( the 2 is SUBSCRIPTED) | Tin(II) iodide |
| Write formula for sodium dichromate | Na2Cr2O7 ( all numbers SUBSCRIPTED) |
| Write formula for iron(III) oxide | Fe2O3 ( 2 and 3 both SUBSCRIPTS) |
| Write formula for dinitrogen trioxide | N2O3 ( numbers are SUBSCRIPTS) |
| Write formula for cobalt(II) chloride | CoCl2 ( 2 is SUBSRIPTED) |
| Write formula for aluminum hydroxide | Al(OH)3 ( 3 is SUBSCRIPTED) |
| Write formula for Hydrosulfuric Acid | H2S ( 2 is SUBSCRIPTED) |
| Write formula for sulfurous acid | H2SO3 ( 2 and 3 both SUBSCRIPTS) |
| Write formula for nitric acid | HNO3 ( 3 is subscripted) |
| Write formula for phosphoric acid | H3PO4 ( 3 and 4 both SUBSCRIPTS) |
| Write formula for acetic acid | CH3COOH or C2H4O2 ( all numbers displayed are SUBSCRIPTS) |
| A sample of chemical "X" is found to contain 5.0 grams of oxygen , 10.0 grams of carbon , and 20.0 grams of nitrogen. The law of definite proportions would predict that a 65 gram sample of chemical "X" should contain how many grams of carbon? | 19.0 grams |
| Consider the two compounds of H2O and H2O2 (numbers are SUBSCRIPTED in both compounds)....According to the Law of Multiple Proportions, the ratio of hydrogen atoms per gram of oxygen in H2O to hydrogen atoms per gram of oxygen in H2O2 is what? | 2 to 1 ....In H2O , there are 2 H for each O, but in H2O2, there is a one-to-one relationship. Therefore, comparing the two compounds H2O and H2O2 in this manner shows that H2O will have 2-to-1 ratio of over that of H2O2 when considering hydrogen atoms per oxygen atom |
| You are given a compound with the chemical formula of MCl2 ( subscripted 2) , in which you know that the M is an UNKNOWN metal. You are told that the metal ion has 26 electrons. Based on the given information, what could you conclude the metal would have to be? | Nickel, Ni..... The reason I know it is nickel (Ni) is because all anions of chlorine have a -1 charge, so two chlorines attached to the unnown metal such that the MCL2 is still a NET ZERO CHARGE indicates that the unknown metal cation is of a POSITIVE two ( 2+) charge so to balance. Knowing the Metal is a cation means that the unknown metal will have LESS electrons that it does protons, infact it will have exactly the charges magnitude number of electrons LESS than protons. The unknown metal has 26 electrons, but out unknown metal has a 2+ charge, so it has 2 LESS electrons than protons, so it MUST have 28 PROTONS making the unknown metal Nickel (Ni) |
| Is there such a substance called aluminum(III) oxide ? | NO.... |
| Is the a chemical called cobalt(II) chloride | YES, that being CoCl2 |
| Is there such a chemical substance called magnesium oxide? | YES, that being MgO |
| Is there such a chemical substance named diphosphorus pentoxide? | Yes, P2O5 |
| True or False? Ions are formed by adding or removing protons or electrons. | FALSE....Removing PROTONS actually chemically CHANGE the element of the ion.But removing or adding electrons from a neutral ion will create an ion. |
| True or False? scientist believe that solids are mostly OPEN space. | TRUE....Since all matter is made up of the basic building blocks of ATOMS, and every atom in universe is MOSTLY EMPTY SPACE about the very small nucleus therefore all solids then must also be composed MOSTLY of NOTHING--EMPTY OPEN SPACE. |
| True or False? Heating water with a Bunsen burner results in a 2:1 mixture of hydrogen and oxygen gases. | FALSE, heating water eventually causes water to break down into OH^- and H^+ ions , of which form O2 and H2 gases in nearly 1:1 relationships |
| True or False? How many Protons and Electrons does the MOST STABLE ion for oxygen have? | 8 PROTONS and 10 ELECTRONS, because if a neutral oxygen atom becomes charged, it perfers to GAIN 2 electrons to be an anion of 2- charge, so O^2- is the most stable ION of the element oxygen. |
