What is the study of matter and the change it undergoes
100
What are valence electrons?
The outermost electrons in an atom that form bonds
100
What is a phase change?
When energy is added to a sample to change the state of matter
100
Define "nucleus"
The nucleus is in the core of the atom and it is composed of protons and neutrons
100
What is the VSEPR theory?
What is the valence shell electron pair repulsion theory
200
What is the difference between a prediction and a hypothesis?
Predictions just say what you think will happen and hypothesis also explains why
200
Pure substances are composed of ___ or ____
What are elements and compounds
200
Density is an example of a ____ property (chemical or physical)
What is physical
200
What is the percent abundance?
the amount of each isotope in a given element
200
What are three types of intermolecular bonds? (In the order of weakest to strongest)
London dispersion, dipole-dipole, and hydrogen bonding
300
What is another word for precision?
"Reproducibility"
300
How is an ionic compound named?
It is the first elements plus the root of the second element and -ide
300
Where can you find the atomic mass on an elements?
On the periodic table!!!!!!!!!!!!
300
What is an electron configuration?
The distribution of electrons among orbitals of an atom, describes where electrons are most likely found and what energies they have
300
What are temporary dipoles and when are they formed?
Temporary dipoles are spontaneous and occur when electrons happen to be more concentrated on one side than the other
400
What is the difference between accuracy and precision?
Accuracy is how close you are to the scientifically accepted value and precision is how close you are to your other measurements
400
What is the law of conservation of matter?
The law of conservation of matter says that matter is neither created nor destroyed
400
What is the name for one of the products formed in a double replacement reaction, the solid product
What is the precipitate
400
Name two of the three types of electron configurations?
noble gas notation, orbital diagrams, and spectroscopic notation
400
What is the formula for soap?
A triglyceride combines with a base to produce soap and a glycerol
500
Name 4 of the 5 BASE UNITS!
The five are length, mass, time, temperature, and the amount of substance
500
What are the four special groups and what are their names?
Group 1 (Alkali Metals), Group 2 (Alkaline Earth Metals), Group 17 (Halogens), and Group 18 (Noble Gases)
500
What is a representative particle?
What is the smallest unit into which a substance can be divided without changing its composition
500
What are the three points of the quantum mechanical atomic model?
-the energy of electrons is quantized
-electrons behave like waves
-at any given moment, it is impossible to know the exact position and momentum of an electron
500
What happens to electrons in each of the following:
ionic bonds
covalent bonds
metallic bonds
ionic bonds: electrons are gained or lost
covalent bonds: electrons are shared
metallic bonds: sea of electrons