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