Electromagnetic Spectrum

Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy

• Radio waves
• Ultraviolet Rays
• Gamma Rays
• X-rays

Which section of the spectrum is the ONLY one we can see?

• X-rays
• Visible Light
• Gamma Rays
• Ultraviolet Rays

Cations are

• positive
• negative
• on the right side of the periodic table.
• nonmetals

Which scientist described a positively charged core (“nucleus”) in the middle of a lot of empty space?

• Chadwick

• Thomson

• Rutherford

• Bohr

How many neutrons in C-14?

• 6
• 7
• 14
• 8

Isotopes are atoms of the same element with different #’s of __________ & therefore different __________.

• neutrons ; atomic numbers

• protons ; atomic numbers

• electrons ; mass numbers

• neutrons ; mass number