CHEM 111 Final Exam UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS
Chemistry The Study of Matter and the Changes it Undergoes
Matter Anything that has mass and takes up space.
Pure Substances Elements and molecules
, Elements A molecule composed of one kind of atom.
Molecules Groups of two or more atoms held together by chemical bonds.
Homogenous Mixtures Mixtures with uniform composition throughout.
Heterogenous Mixtures Mixtures with no uniform composition.
How do Mixtures and Compounds Differ? Mixtures aren't molecularly bonded together in the way elemental compounds
are.
Physical Change A change in a substance that does not involve a change in the identity of the
substance.
Chemical Change A change in matter that produces one or more new substances.
Chemical Reaction The process by which one or more substances change to produce one or more
different substances.
What are Indicators that a Chemical Reaction has Production of heat, cold, light, gas, and solids.
Occurred?
Chemical Properties Reactivity with water, heat, cold, light, gas, and solids.
Physical Properties? Density, melting point/freezing point, boiling point/condensation point, color,
odor, and taste.
What are the Steps of the Scientific Method? Data, laws, theory, prediction, and new data.
What Are Laws? Summarized facts into general statements.
What is a Theory? An attempt to explain why a law or hypothesis is true.
What is a Prediction? A new proposed behavior based on the theory.
What is New Data? Tested predictions by conducting new experiments.
Precision How close each measurement is to other measurements.
Accuracy How close your answer is to the true value.
Standard Dosage Calculation Steps 1.) Convert lbs to kgs.
2.) Take the weight in kg and multiply it by the given dosage (mg/kg).
3.) Write in scientific notation to reduce the number of sig figs (if necessary).
How is a Calorimeter Used to Measure the Energy By burning it in a sealed, oxygen-rich container submerged in a known amount of
Contained in an Item? water.
Chemistry The Study of Matter and the Changes it Undergoes
Matter Anything that has mass and takes up space.
Pure Substances Elements and molecules
, Elements A molecule composed of one kind of atom.
Molecules Groups of two or more atoms held together by chemical bonds.
Homogenous Mixtures Mixtures with uniform composition throughout.
Heterogenous Mixtures Mixtures with no uniform composition.
How do Mixtures and Compounds Differ? Mixtures aren't molecularly bonded together in the way elemental compounds
are.
Physical Change A change in a substance that does not involve a change in the identity of the
substance.
Chemical Change A change in matter that produces one or more new substances.
Chemical Reaction The process by which one or more substances change to produce one or more
different substances.
What are Indicators that a Chemical Reaction has Production of heat, cold, light, gas, and solids.
Occurred?
Chemical Properties Reactivity with water, heat, cold, light, gas, and solids.
Physical Properties? Density, melting point/freezing point, boiling point/condensation point, color,
odor, and taste.
What are the Steps of the Scientific Method? Data, laws, theory, prediction, and new data.
What Are Laws? Summarized facts into general statements.
What is a Theory? An attempt to explain why a law or hypothesis is true.
What is a Prediction? A new proposed behavior based on the theory.
What is New Data? Tested predictions by conducting new experiments.
Precision How close each measurement is to other measurements.
Accuracy How close your answer is to the true value.
Standard Dosage Calculation Steps 1.) Convert lbs to kgs.
2.) Take the weight in kg and multiply it by the given dosage (mg/kg).
3.) Write in scientific notation to reduce the number of sig figs (if necessary).
How is a Calorimeter Used to Measure the Energy By burning it in a sealed, oxygen-rich container submerged in a known amount of
Contained in an Item? water.
