ss45 Match up the following terms with the correct phrase. A - Mass number, B -
ID: 914354 • Letter: S
Question
ss45
Match up the following terms with the correct phrase. A - Mass number, B - Atomic number, C - Isotope, D - Proton, E - Ion An atom of the same element with different mass numbers. ___ This subatomic particle identifies the element. ___ The sum of the protons and the neutrons. ___ An atom that loses or gains electrons. ___ The number of protons in the nucleus of the atom. ___ Moving from left-to-right across the period (row) of the periodic table, indicate if the following are true or false. The atomic mass increases by one from element to element. (T/F) Each element has a unique number of neutrons. (T/F) The element are arranged according to increasing atomic number. (T/F) The elements become more non-metallic. (T/F)Explanation / Answer
Mass number = atomic number + number of neutrons
, atomic number = number of protons = number of neutrons
Isotopes : same atomic number but different number of protons
Ions is formed loosing or gaining electrons.
Lets use this information to answer this question.
a). isotope C
b) Number of proton D
c) Mass number A
d) Ion E
e) Atomic number B
10)
a) Atomic mass does not increase by one from left to right because atomic number increase by one but not mass. There are addition of proton and neutrons both so this increase is not by one.
F
b) Each elements does not have unique number of neutrons they can be varies so isotopes are formed.
F
c) Elements are arranged according to atomic number (increasing ) . This is true
T
d)
Yes this is true since metallic characters are decreasing as we move from left to right.
T
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