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Topic Review (Newest First)

  • 08-27-2009, 01:47 PM
    !$*BUNZ*$!

    a little bit help with physics please?

    Q1) Constituting the scientific study of matter at the atomicand molecular scale, chemistry deals primarily with collections of atoms, suchas gases, molecules, crystals, and metals.
    True
    False

    Q2) Any characteristic that can be observed or measuredwithout changing the composition of the substance is called a homogenousproperty.
    True
    False

    Q3) Chemical matter is the part of the universe which is madeof chemical atoms.
    True
    False

    Q4) When an atom is said to be in its ground state the atom'selectrons all have the lowest possible energies.
    True
    False

    Q5) Elements in a group have similar chemical propertiesbecause they have the same number of valence electrons.
    True
    False

    Q6) Natural sciences form the basis for the applied sciences
    True
    False

    Q7) Anything which occupies space and has mass is known asspace.
    True
    False

    Q8) Materials are classified as solids, liquids, or gasesbased on their chemical composition.
    True
    False

    Q9) Atoms of two different elements have different massnumbers.
    True
    False

    Q10) Hydrogen was the element that Mendeleevcorrectly predict the properties of even before it hadbeen discovered.
    True
    False

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