Matter
What are the 3 types of matter?
Solid, Liquid, Gas
How many letters are in a chemical symbol?
1 or 2
Elements
An electron has what kind of charge?
negative
what is a molecule?
A molecule is the smallest piece of a substance.
What is plasma?
4th type of matter
What does the atomic number tell me?
Where it is on the periodic table and specifying the number of protons in the nucleus of an atom
Periods
How many electrond can the second shell hold?
The second shell can hold 8 electrons.
what is a mixture?
A mixture is made up of two or more different substances which are mixed but are not combined chemically and do not loose their own physical properties.
What do you call a liquid forming into a gas?
Vaporization
Where do you find the electrons on the periodic table?
Look at the atomic number
What are the vertical lines on the periodic table?
Groups
What does the bohr model tell you?
Where the electrons orbit the nucleus.
in sugar and water mixture what is the water?
Solvent
What causes a change in the phase of matter?
A change in physical conditions like temperature can cause the phase of the matter to change.
Iron
Name the different classifications of elements we learned about in class?
metals, non-metals, gases, metalloids
The element krypton is located in group 18 on the periodic table. What do you know about Krypton based on its location?
It reacts strongly with other elements.
What is a homogenous mixture and give an example.
A homogenous solution means that the solution is the same throughout. The solution is mixed very well so each part of the liquid is the same as every other part
paint
What is the difference between matter as a gas and matter as plasma?
Plasma is a gas that is superheated and stripped of its electrons.
How do you calculate the number of neutrons in an element?
Subtract the atomic number(number of protons) from the mass number (total protons and neutrons).
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Name 5 elements on the periodic table along with their chemical symbol.
Answers may vary.
What are the differnt shells called?
first shell is called the K shell, the second one is the L shell, and so on up to the Q shell
What are the 7 diatomic elements?
The seven diatomic elements are hydrogen, oxygen, nitrogen, chlorine, bromine, iodine, and fluorine.