Matter
the amount of space an object takes up
volume
is a pure substance made of more than one type of atom that are chemically joined.
compound
Which is the atomic number of silver?
47
How many atoms are in NH3
4
is needed to start a chemical reaction
reactant
liquid to gas
deposition
has properties of metals and nonmetals.
metalloid
What is matter that is shiny, malleable, and ductile?
metal
numbers used to balance equations
coefficients
the result of a chemical reaction
product
mass of an object per unit of volume
density
Which type of particle is found in the cloud around the nucleus and has a negative charge?
electron
How many valence electrons does chlorine have?
7
Which are the reactants?
CH4 + O2 → CO2 + H2O
CH4 + O2
a solid formed in a chemical reaction
precipitate
solid to gas
sublimation
Which type of particle is located in the nucleus and has no charge?
neutron
Which group is sodium in?
1
Which elements are represented by the chemical formula NaHCO2?
sodium, hydrogen, carbon, oxygen
turns litmus paper blue
the only substance to exist naturally as a solid, liquid and gas
water
Which two of these formulas have an equal number of carbon atoms present?
1– MG3(PO4)2
2– Na2SO4
3– NO3 (C2H3)3
4– C6H12O6
5– AI(NO3)3
3– NO3 (C2H3)3
4– C6H12O6
Is silicon a metal, nonmetal, or metalloid?
metalloid
(NH4)2SO4 is the chemical formula for ammonium sulfate. How many hydrogen atoms are represented in this formula?
8
Which type of solution is one with a pH of 5?
acidic