What is the term for the study of chemical substances that do not contain the element carbon?
inorganic chemistry
What is the term for a tentative proposal of a scientific principle that attempts to explain the
meaning of a set of data collected in an experiment?
hypothesis
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What is the term for the study of the composition and properties of matter?
chemistry
What is the term for the methodical exploration of nature and the logical explanation of the
observations?
science
What is the term for the study of chemical substances that contain the element carbon?
organic chemistry
,What is the term for an extensively tested proposal of a scientific principle that states a
measurable relationship at different conditions?
natural law
What is the difference between a scientific theory and a natural law?
A theory explains behavior and a law states a measurable relationship.
What is the term for an extensively tested proposal of a scientific principle that explains the
behavior of nature?
scientific theory
What is the term for the design of products and processes that reduce or eliminate hazardous
chemical substances?
green chemistry
What four elements composed everything in nature according to the beliefs of the ancient
Greeks?
air, earth, fire, and water
Which state of matter is characterized by having an indefinite shape, but a definite volume?
liquid only
Which of the following materials is NOT a pure substance?
mixture
What must occur for a change to be a chemical reaction?
There must be a change in chemical properties.
Which of the following is a heterogeneous mixture?
soil
Which of the following is considered a physical property of a substance?
malleability
, Which of the following is a physical change?
evaporation
Which of the following is a chemical property of water at 4C?
its ability to decompose into hydrogen and oxygen
Which of the following cannot be broken down or separated?
iron
Which state of matter has a definite volume and takes the shape of its container?
liquid only
We have an expert-written solution to this problem!
An example of an element is
carbon
How many neutrons are in a Phosphorus-31 atom?
16
A nitrogen gains 3 electrons. What is its net charge (electrical charge)?
-3
Which model of the atom is thought to be true?
two electrons in their principal energy level
All atoms are
neutral, with the number of protons equaling the number of electrons
As a sodium atom forms a sodium isotope, the number of protons in the nucleus
remains the same
How do isotopes hydrogen-2 and hydrogen-3 differ?
Hydrogen-3 has two neutrons
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