Environmental Justice Through the Lens of Chemistry Flashcards
Midterm
What is the primary goal of scientific inquiry?
To understand our surrounding and natural phenomena through observation, experimentation, and analysis.
Name two characteristics that define the nature of science?
Reliance on empirical evidence and the iterative process of testing and refining scientific models.
List the basic steps of the scientific method?
Asking a question, conducting background research, forming a hypothesis, experimenting and analyzing data, and drawing a conclusion.
what is a hypothesis?
a proposed explanation made on the basis of evidence, that can be tested.
Define environmental justice?
The fair treatment and meaningful involvement of all people regardless of race, color, national origin, or income with respect to the development, implementation, and enforcement of environmental laws, regulations, and policies
what role do socioeconomic factors play in environmental justice?
influencing individuals or communities exposure to environmental hazards and their capacity to respond to and recover from environmental health risks.
what does WHO stand for?
World Health Organization, focusing on public health policies, health research, and response to health emergencies.
what is the main purpose of the environmental protection agency?
to protect human health and the environment by enforcing regulations based on laws passed by congress.
Give an example of an EPA regulation aimed at protecting environmental health?
Clean air act, regulates air emissions from stationary and mobile sources.
Identify one hazard pictogram and describe what hazard it indicates?
The corrosive material pictogram, which depicts a substance dripping on a hand and a surface, indicates that the chemical can cause skin corrosion/burns or damage to metals.
What information is provided in a safety data sheet?
detailed information about a chemicals properties, hazards, protective measures, and safety precautions for handling, storing, and transporting the chemical.
what is the charge of a proton?
The charge of a proton is positive (+)
Where in the atom is the electron located?
The electron is located in the electronic cloud surrounding the nucleus of an atom
What particle in an atom has no charge?
The neutron
Which number in the periodic table determines the elements identity?
The atomic number, which is the number of protons
Can you name the three main subatomic particles found in an atom?
Protons, neutrons, and electrons
What is the difference between an atom and an element?
An atom is the particle of matter that has a chemical identity, while an element is a specific atom, or molecule or substance made of the same one type of atoms.
How do isotopes of an element differ from each other?
Isotopes have different number of neutrons in their nuclei.
What is a monochromatic ion?
A monochromatic ion is an atom that has lost or gained electrons, resulting in a net charge.
If an atom has 11 protons, what element is it?
Sodium
What is the atomic weight of an element, and how is it calculated?
The atomic weight is the average mass of an elements isotopes, weighed by their natural abundance.
What term describes atoms with the same number of protons but different numbers of neutrons?
Isotope
What does the mass number of an atom represent?
The total number of protons and neutrons
Define ionization in the context of atoms
Ionization is the process by which an atom gains or loses electrons, resulting in a charged ion