on pg. 29 in your text; find the equation number 1. at the top of the page. (C + Cl2 arrow CCl4);
Write the equation. Label the reactants and the products.
What is C + Cl2 reactants; CCl4 product?
100
the symbol for hydrogen
What is capital H?
100
the number of hydrogen atoms in : H2SO4
What is 2?
100
materials present before a reaction
What are reactants?
200
uses symbols to show chemical reactions
What is a chemical equation?
200
pg. 29 in your text; practice problem number 1 (C + Cl2 arrow CCl4); tell how many atoms of each element are on each side of the equation.
What is: reactants: C - 1; Cl -2; products: C-1; Cl-4?
200
the chemical formula for hydrogen peroxide is:
What is H2O2? (the 2 should be dropped down; this website does not allow that formatting)
200
the name of the 2 in : 2C3H8O?
What is the coefficient?
200
reaction where compounds are broken down into simpler products
What is a decomposition reaction?
300
reaction where one element replaces another in a compound
What is a replacement reaction?
300
pg. 29 in your text; practice problem 2. (Al2O3 arrow Al + O2); what are the reactants? what are the products?
What is reactants: Al2O3; products Al and O2?
300
3H20. The 3 is an example of
What is a coefficient?
300
5 grams of magnesium and 9 grams of oxygen react to form ______________ grams of magnesium oxide.
What is 14 grams?
300
indicates how many atoms of an element are in one molecule
What is a subscript?
400
a reaction where two or more simple substances combine to make a more complex one
What is synthesis reaction?
400
pg. 29 in your text; practice problem 1: balance the equation (C + Cl2 arrow CCl4)
What is C +2Cl2 arrow CCl4?
400
CO has no subscripts shown. What are the subscripts if no numbers are written?
What is 1?
400
pg. 31 in your text; #5 B. How many atoms of each element are on the reactant side of the equation?
What is aluminum - 2; iron - 2; oxygen - 3?
400
shows the ratio of elements in a compound
What is a chemical formula?
500
numbers telling how many molecules are involved in a chemical reaction
What are coefficients?
500
pg. 29 in your text; at the top; practice problem 2. balance the equation: Al2O3 arrow Al + O2
What is 2Al2O3 arrow 4Al + 3O2?
500
every balanced equation is an example of this principle
What is the conservation of mass?
500
pg. 31, #5D; how many total atoms are on the product side?
What is (12 + 4 + 16 = ) 32 total atoms?
500
matter is not created or destroyed during a chemical reaction