Structure of Atom

Choose the particle that has no charge.

• nucleus
• neutron
• proton
• electron

What are the maximum number of electrons that go on the first 3 energy levels?

• 2,4,16
• 2,8,18
• 4,8,12
• 3,4,6

Tags

NGSS.MS-PS1-1

What is the mass number and name of an element with 8 protons and 8 neutrons?

• 16 - Carbon
• 16 - Oxygen
• 24 - Oxygen
• 8 - Neon

Tags

NGSS.HS-PS1-8

How many protons, electrons and neutrons does an neutral atom of Calcium have?  Its atomic number is 20 and the mass number is 40.

• 20 protons, 18 electrons and 40 neutrons
• 20 protons, 20 electrons and 20 neutrons
• 40 protons, 40 electrons and 20 neutrons
• 20 protons, 18 electrons and 20 neutrons

Tags

NGSS.MS-PS1-1

Which statement best describes an electron?

• Smaller mass than a proton and a negative charge
• Smaller mass than a proton and a positive charge
• Greater mass than a proton and a negative charge
• Greater mass than a proton and a positive charge

Tags

NGSS.MS-PS2-3

A wave with a large wavelength will have a ______ frequency and _____ energy

• high, low

• high, high

• low, high

• low, low

Tags

NGSS.HS-PS4-1

The frequency of violet light is 7.5x10¹⁴ Hz. What is its wavelength?

• 4.0x10^-7 m

• 4.0x10⁷ m

• 2.25x10²³m

• 2.25x10²³ Hz

Tags

NGSS.HS-PS4-1

The distance from one point to the next corresponding point on a wave is called the ________________.

• waveform
• peak
• amplitude
• wavelength

High frequency waves have _________ wavelength.

• varying
• high
• the same
• low

Tags

NGSS.HS-PS4-1

The line with the shortest wavelength is produced in the hydrogen spectrum when electron moves

• from n=2 to n=1

• from n=4 to n=1

• from n=3 to n=1

• from n=4 to n=3