What is an example of a chemical property?

Chemical properties can only be established by changing a substance’s chemical identity, and are different from physical properties, which can be observed by viewing or touching a sample.

The internal qualities of a substance must be altered to determine its chemical properties. For example:

Flammability - How easily something will burn or ignite, is a chemical property because you can’t tell just by looking at something how easily it will burn. Fire testing is done to determine how difficult or easy it will be to get a certain material to burn.

Information about flammability is used in building codes, fire codes, insurance requirements, and storing, handling, and transporting highly flammable materials. 

Heat of Combustion - This chemical property is the amount of energy that is released as heat when a substance is burned with oxygen.

Examples of this chemical property is a calorie which converts to energy within the body and the amount of heat generated by the burning of various fuels.

Toxicity - How much a substance can damage an animal, plant, cell, organ, or other organism is its toxicity. Materials with the chemical property of toxicity include lead, chlorine gas, hydrofluoric acid, and mercury. Toxicity is measured by how the lead, chlorine gas, mercury, or other substance affects the organism – basically, by how much damage it does to the organism and how quickly that damage occurs.For example, lead is a toxic substance that can damage various parts of the human body, including bones, the heart, kidneys, intestines, and the nervous and reproductive systems.Ability to oxidize - This is what takes place by gaining oxygen, losing hydrogen, or losing electrons, and is a chemical property that results in the oxidation number of a substance being changed. An example of this is rust. Over time, iron and steel (which is made of iron) will rust. However, they will rust more quickly if they are combined with pure oxygen.Examples of oxidation include the way an apple turns brown after it has been cut, the way a penny turns green, and the way a fender on a car can become rusty.  Radioactivity - The emission of radiation from an atom with an unstable nucleus, is a chemical property. On the periodic table of elements, the elements that have no stable isotopes are considered radioactive.Some of the most radioactive elements are hydrogen, beryllium, carbon, calcium, cobalt, zinc and iron.Chemical stability - This chemical property in a given environment, also referred to as thermodynamic stability of a chemical system, refers to the stability that takes place when a chemical system is in its lowest energy state – a state of chemical equilibrium, or balance, with its environment.This equilibrium will last indefinitely unless something happens to change the system.  Half-life - This chemical property is the amount of time it will take for half of the original substance to decay. It is used in nuclear chemistry and nuclear physics to describe the time required for half of the unstable radioactive atoms in a sample to experience radioactive decay.  Each of these are chemical properties. Now you can better understand what a chemical property is.LINK/CITE
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Answer: abeexplanation:

1. the question asks the most appropriate, which seems to rule out "all of the above." your choice appears to be the correct one.

2. the protocol described is good for identifying correlation, but not cause and effect. for cause/effect, you need to devise a protocol that will assign the treatment (or not) to groups that have essentially the same "demographics" with respect to all the other variables. your choice regarding control group seems appropriate. random assignment of treatment (choice d) may be appropriate also. (i think you can argue that b and d are just different descriptions of the same method.)

3. d will randomize the birds, but may not guarantee there are 10 in each group. e will do both, so seems the better choice.

comment on question 2

based on the problem statement, it seems clear that confident, attentive drivers are more likely to use daytime running lights. so, the protocol might need to be devised in such a way that the lights would be turned on or off without the driver's knowledge. (an attentive driver will figure it out.) assigning a confident, attentive driver to a group required to drive without running lights might mess with his/her confidence and attentiveness. you don't want your experiment to do that. (nor do you want the experiment to subject a driver to greater risk of accident as a consequence of driving without running lights.) experiments involving human safety are always problematic.

I’m not sure what your trying to say here.. can you clarify again?