CHEM 1113 Recitation Week 3 Matter, Compounds and Chemical Formulas and week\'s
ID: 477661 • Letter: C
Question
CHEM 1113 Recitation Week 3 Matter, Compounds and Chemical Formulas and week's recitation consists of pre-recitation questions dealing with the qualitative the quantitative aspects of These questions MUST be completed prior to start of the period and during the minutes of the period you will During the remainder of the recitation period you will address the questions in the Recitation section of this document. Pre-Recitation: Natter, Compounds and Chemical Formulas These questions MUST be completed prior to the start of the recitation period. Part I: Molecular/Atomic Representations of Matter Adapted from University of New Materials Library (Bauer, Rickert, Langdon) Match these molecularlatomic representations to the descriptions in the table on the following page. In of the above representations: A circle represents an atom. All atoms are shown. There may NOT be a representation that matches the stated description. In that case, draw your own representation that matches the description. Questions are given with each representation that should guide your thinking to identify the description match(es). There may be more than one that matches. Treat each item independently. Circle the letter(s) that match. Page 1 of 6 CHEM 1113 Week 3 RecitationExplanation / Answer
Q1) H2 at room temperature isdiatoic molecule in gas phase. G shows some diatomic molecules in gas phase, but not pure.
Q2)A pure substanc econtains only one type of atoms or molecules.
A,B, C, D , E, F contain only one type of molecules. they have only one type of matter. cannot be mixture.
Q3) A pure compound contains only one type of matter(atoms or molecules).
A<B,C,D,E and F are the examples.
B,D,E have two types of atoms.
Q4) A mixture of two compounds
It contains more then one type of matter.
G and H .
Q5) A piece of aluminium foil at room temperature is repreented by A, as it is in solid phase, no vapor over it and containsonly one type of atoms.