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Vocab
Atomic Structure
Periodic Table
Water Molecule
Scientific Method
100
Chemistry is the study of ____________.
Matter
100
What 3 parts make up an atom?
proton, neutron, electron
100
Who is considered the discovered of the periodic table?
Mendeleev
100
What are the two elements that make up a water molecule?
oxygen and hydrogen
100
What is the first step of the scientific method...according to Ms. O?
Make an observation
200
The atomic _____________ will tell you the number of protons and the number of electrons in an atom.
number
200
What is the center of the atom called?
nucleus
200
The periodic table consists of two organizing factors. The sections are organized into ______ and __________.
groups/periods
200
In a water molecule hydrogen and oxygen share a specific type of electron...what is it called?
Valence electron
200
What is the second step of the scientific method?
Ask a question
300
_____________ are the building blocks of matter.
atoms
300
What particle in an atom is considered negative?
electron.
300
_________ are horizontal sections of the periodic table.
Periods
300
What type of bond connects the elements in a water molecule?
Covalent
300
Scientific questions should be worded so that you can identify two variables. What is the name of those variables?
Independent and dependent
400
The universe is made up of two things ________ and ________.
matter and energy
400
When describing atoms on paper were depict the nucleus and an atoms outer rings with electrons. This type of model is called an _____________________.
Electron configuration
400
__________ are the vertical sections of the periodic table.
groups
400
Water molecules adhere to themselves by the power of __________.
cohesion
400
In the experiment section of the scientific method there are two sub-categories...what are they?
materials and procedure.
500
What percent of the world is made up of fresh water?
3%
500
What is the equation for finding the correct number of neutrons in an atom?
Atomic mass - the # of protons.
500
Groups or periods? As you move down _________ you are adding an energy shell (hula hoop).
Periods
500
Water molecules will stick to themselves and and form a droplet through the power of _______.
Surface tension.
500
What are two components of the record and analyze section of the scientific method?
Table/Chart and graph.