Ch.1 Matter, Measurement, and
Problem Solving
Problem Solving
One or more well-established hypotheses may form the basis for...
What is a Scientific Theory
Name one of the laws of Dalton's Atomic Theory.
What is
1)The law of conservation of mass
2)The law of definite proportions
3)The law of multiple proportions
Name the following Compound
Cu2O
What is Copper (I) Oxide
Balance the following chemical equation
H2+O2→H2O
What is 2H2+O2→2H2O
Consider the reaction:
2 A(aq) B(aq)->C(aq )
What is the limiting reactant if you mix equal volumes of a 1 M solution of A and a 1 M solution of B?
What is A.
What kind of change is rusting iron?
What is a Chemical Change
JJ Thomson constructed a partially evacuated glass tube called a...
What is cathode ray tube
Name the following Compound
CCl4
What is Carbon tetrachloride
In a chemical reaction, the theoretical yield of a product is 50 grams, but the actual yield obtained in the lab is 45 grams. What is the percent yield?
(hint: Percent yield=theoretical yield/actual yield×100)
What is 90%
What is the molarity of a solution made by dissolving 5.00 moles of NaCl in 2.00 liters of solution?
What is 2.50 M
Determine the Number of Significant digits in the following: 279*83= _______
What is 23,000.
In 1909, this scientist’s famous gold foil experiment showed that atoms have a tiny, dense, positively charged nucleus, overturning the plum-pudding model.
Who is Rutherford
Name the following Compound
H2SO4
What is Sulfuric acid
How many atoms are in 2.00 moles of copper (Cu)?
1 mole=6.022×1023 atoms
What is 1.2044×1024 atoms of Cu
To what volume should you dilute 0.250 L of a 10.0 M HCl solution to obtain a 2.00 M HCl solution?
What is 1.25 L
When ice melts into liquid water, what type of change has occurred, and how would you classify the matter before and after the change?
What is a physical change; solid compound to a liquid compound?
The density of silver is 10.5 g/cm³. Emily Johnson determines the mass of an irregularly shaped piece of silver to be 212.35 g. Calculate the volume of Johnson’s piece of silver, with correct significant figures.
What is 20.2 cm³
Calculate the Molar Mass of the following
C4H10O
What is 74.12 g/mol
2 moles of propane react with 8 moles of oxygen in a gas combustion reaction. How many moles of carbon dioxide are formed? (hint: balance the equation first)
C3H8+O2 → CO2+H2O
What is 4.8 mol CO2
Determine whether this reaction is an oxidation-reduction (redox) reaction and state why. If it is a redox reaction, identify the oxidizing agent and the reducing agent.
2Mg(s)+O2(g)→2MgO(s)
What is not a redox reaction?
Convert 235 km ->mm
(1km=1,000m & 1m=1,000mm)
What is 2.35*10^8mm
For the ion 56Fe²⁺, state the correct values for each of the following:
Number of Protons:
Number of Neutrons:
Number of Electrons:
Number of Protons: 26
Number of Neutrons: 30
Number of Electrons: 24
A compound consists of 18.24 g of Carbon, 4.56 g of Hydrogen, and 9.12 g of Oxygen. Find the empirical formula.
What is C8H24O3
Balance the following chemical equation
Fe+HCl→FeCl3+H
What is 2Fe+6HCl→2FeCl3+3H
What is the oxidation state of sulfur in H₂SO₄ (sulfuric acid)?
What is +6.