Science

What is the location of the electron?

• the free floating negatively charged electron cloud
• the free floating positively charged electron cloud
• the very dense positively charged electron orbital
• the positively charged very dense nucleus

Tags

NGSS.MS-PS1-1

In a stable atom the amount of electrons is electron is equal to

• neutrons
• protons
• atomic mass
• neutrons + protons

Tags

NGSS.MS-PS1-1

What is the charge of the electron

• positive
• no charge
• negative
• neutral

Tags

NGSS.MS-PS2-3

What is the relative mass of the electron

• same mass as proton
• larger mass than protons and neutrons
• less than 1amu
• electrons don't have a mass

How many electrons does an atom with 8 protons have?

• 8
• 16
• 15.99
• 24

Tags

NGSS.MS-PS1-1

Bohr's model of the atom proposed that ___.

• electrons move around the nucleus in fixed orbits
• neutrons move around the nucleus
• neutrons do not exist, but are just paired protons and electrons
• the nucleus spins

Which of the following correctly describes the electron cloud model?

• Electrons do not follow fixed orbits, but are found more frequently in areas around the nucleus.
• Electrons are found in fixed orbitals around a positive nucleus.
• All of an atom's mass is concentrated in the electron cloud around the nucleus.
• Electrons are evenly embedded throughout a positively charged sphere.

What do protons, electrons and neutrons make?

• element

• compound

• atom

Tags

NGSS.MS-PS1-1

Atomic weight

• number of protons and neutrons inside the nucleus

• number or electrons or protons

• number of protons, neutrons and electrons

Tags

NGSS.MS-PS1-1

What does the number 11 stand for in the Sodium block?

• atomic number

• atomic weight

• Stranger Things

Tags

NGSS.MS-PS1-1