Semester 1 Vocab and Big Ideas Review
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What does a ruler measure?
length
What does a beaker measure?
Trick question! It holds liquids, but it is not a good tool for measuring.
What does a graduated cylinder measure?
volume
What does a thermometer measure?
temperature
What does a balance measure?
mass
What are good numbers for scaling a graph?
1, 2, 5 (or those numbers times a power of ten)
The first column of a data tables is graphed on which axis?
The x-axis (horizontal axis or the bottom axis)
How do you find density from a graph?
Slope of mass vs. volume
Scientific models are always perfect. True or False
Fals
Scientific theories can grow up to be laws. True or False
False
Scientific Laws are better than theories. True or False
False - they have a different purpose
Who is the father of atomic theory?
Democritus
Who was the scientist that states all atoms of the same element are the same, but atoms of different elements are different?
Dalton
Who discovered the electron?
Thomson
Who discovered the dense positive center of the atom?
Rutherford
Who gets credit for electrons having different energy levels?
Bohr
Who discovered the neutron?
Chadwick
Where are protons located?
The nucleus
Where are neutrons located?
The nucleus
Where are electrons located?
The electron cloud
Changing protons changes________
the element
Changing neutrons changes _______
the isotope
Changing electrons changes _______
the charge of an atom or ion
An atom of the same element with a different number of neutrons and different atomic mass is called ________
an isotope