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Chemistry QSBA Practice
Terms in this set (15)
An Alkali Metal will most readily react with a...?
What grouping identifies chemical properties?
Combustibility, flammability, reactivity
What must atoms of the same element contain?
The same number of protons
What phase change involves the absorption of heat?
Liquid to gas
How is an increase in atomic number related to an increase in atomic mass?
More protons are present in the atomic nucleus
What do isotopes of an element have different?
What elements are characterized by having only 5 electrons in the p sub level?
In which direction does atomic radius decrease?
Left to right
Elements from which two groups in the periodic table would MOST likely combine with each other to form an ionic compound?
16 and 17
Which scientist was the first to conclude through experimentation that atoms have positive charge in their nuclei?
What conclusion can be drawn from Rutherford's Gold Foil experiment?
Atoms are mostly empty space
What was Neil Bohr's contribution to modern atomic theory the proposition of?
An atom has electrons in discrete energy levels
What change is occurring within the atomic nuclei when you move left to right across a period?
A proton is gained
What was determined by Werner Heisenberg and is the understanding that the position of an electron in an electron cloud cannot be precisely determined?
If an element is in the same group....
They undergo similar reactions with other elements
THIS SET IS OFTEN IN FOLDERS WITH...
First 20 Elements
Honors Chemistry Unit 2-3
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