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WorksheetsEOU Chemistry Study Guide
Total questions: 15
Worksheet time: 1hrs 25mins
H2O => H2 + O
???? => 2.2g 1.3g
If this equation followed the Law of Conservation of Mass, what is the missing number?
4.8 g
1.1 g
3.5 g
2.2 g
Which subatomic particle determines the Identity of every element?
Protons
Neutrons
Electrons
Valence Electrons
Which of the following determines an elements reactivity?
Nucleus
Neutrons
Protons
Valence Electrons
Using a Periodic Table, Which element in Period 3 is a metal with 1 valence electron?
Sodium
Scandium
Argon
Hydrogen
Which statement BEST describes Beryllium?
4 Protons, 5 Electrons, 4 Neutrons
5 Protons, 5 Electrons, 4 Neutrons
4 Protons, 4 Electrons, 5 Neutrons
4 Protons, 4 Electrons, 4 Neutrons
How many Atoms does NaH2(CO)3 contain?
7 atoms
8 atoms
9 atoms
10 atoms
How many Oxygen atoms are in the formula Mg(OH)2?
1 atom of Oxygen
2 atoms of Oxygen
4 atoms of Oxygen
Zero atoms of Oxygen
Elements in the same Group / Family ...
have the same number of valence electrons
have the same number of energy levels
have nothing in common
have same number of protons
From the list below, which two elements are in the same Period?
K and Ir
Ru and P
He and Ne
Ca and Ni
All of the following are signs that a Chemical Reaction / Change has occurred EXCEPT
Gas produced
Solid turns to liquid
Weird color change
Precipitate forms
Weird change in temperature
All Elements in Group 13 have how many valence electrons
3
13
1
4
Which subatomic particle is NOT in the nucleus of an atom?
Protons
Neutrons
Electrons
Which element is the MOST reactive on the list shown?
Fluorine
Helium
Krypton
Xenon
Which of the following elements is a Metalloid?
Aluminium
Hyrdogen
Helium
Boron
Which property best applies to Metals on the Periodic Table of Elements?
Malleable
Brittle
Poor Conductor
Not Shiny
