Chemical Elements and Compounds
Atomic Structure
Chemical Bonding
Misc chem
Biology: The Study of Life
100
A substance that cannot be broken down to other substances by chemical reactions (i.e. Fe).
What is an element?
100
The smallest unit of matter that still retains the properties of an element.
What is an atom?
100
These are formed when atoms combine through chemical bonding.
What are molecules?
100

How many electrons can go in the first ring of an atom?

what is 2?

100

Groups of organisms of one type living in a designated area.

What are Populations?

200
A substance consisting of two or more elements combined in a fixed ratio (i.e. NaCl).
What is a compound?
200
Subatomic particles that have varying charges and make up an atom.
What are neutrons, protons and electrons?
200
The sharing of a pair of valence electrons by two atoms.
What is a covalent bond?
200
The making and breaking of chemical bonds.
What are chemical reactions?
200

organic material that contains genetic information and instructions for protein synthesis.

What is DNA?

300

True or False: Covalent bonds are the weakest bonds?

What is False?
300

An atom with an unequal amount of protons and neutrons

What is an isotope?

300
The attraction of an atom for the electrons of a covalent bond.
What is electronegativity?
300
The molecules that react in a chemical reaction and the molecules they form.
What are reactants and products?
300

Different species living together in one area.

What is a Community?

400

Most abundant elements in the human body. Double points if you can rank them in order of most abundant to least abundant.

What are carbon (C), oxygen (O), hydrogen (H) and nitrogen (N)?

Oxygen--> Carbon--> Hydrogen--> Nitrogen

400
The outermost shell of an electron cloud where electrons contain the most energy.
What is the valence shell?
400
This forms when a hydrogen atom covalently bonded to one electronegative atom is also attracted to another electronegative atom.
What is a hydrogen bond?
400

How does an atom achieve stability?

What is by filling its outer electron shell?

400

Contractions during childbirth and blood clots are examples of....

What is Positive feedback?

500

____ of electrons causes a partial
positive or negative charge for each atom or
molecule

What is unequal sharing?

500

An element with an atomic number of 22 and an atomic mass of 46 has ___ protons, ___ neutrons, and ____electrons. (assuming its neutral)

What is 22 protons, 24 neutrons, and 22 electrons?

500
A weak bond that is formed when electrons accumulate in one part of the molecule or another, creating brief "hot spots" of positive and negative charge that enable all atoms and molecules to stick to one another.
What are van der Waals interactions?
500

Two types of ions and their charges.

What is Cation (+) and Anion (-)?

500

Two part naming system created by Carl Linnaeus (Ex: Echerichia coli)

What is Binomial Nomenclature?

M
e
n
u