Found on the left side of a chemical formula
What is reactants
Name one evidence that a chemical reaction has occured
What is bubbles, light, color change, temperature change, formation of a precipitate
Identify the coefficient in this chemical formula
4CO2
What is 4
Groups are
the columns of the periodic table
20g H2 + __g O -----> 27g H2O
How many grams of Oxygen are needed?
7
What subatomic particle identifies an atom of an element?
What is a proton
How many total elements are in this chemical formula?
CO3
What is 2
Periods tell you the number of
energy levels an atom has
Name a metalloid
Any element along the staircase
Electrons in the outermost shell of an atom
What is a valence electron
How many Carbon atoms are in this chemical formula?
C6H12O6
What is 6
This family includes Helium
What is noble gases
I have no luster, am brittle, and cannot conduct electricity
What is nonmetals
What is more reactive, Carbon or Neon?
Carbon
I have 30 protons and 30 electrons, what element am I?
What is Zinc
How many Calcium atoms are in this chemical formula?
3Ca3O6
What is 9
This element has 4 energy levels and 2 valence electrons
What is calcium
Reactivity increases from ______ to _______
Right to left
Name an element with similar chemical properties as Boron
any elements in group 13