Electrons

All of the following are terms used to describe the location of the electrons except.

• negatively charged orbital
• dense and negatively charged nucleus
• negatively charged electron cloud
• the neighborhood

Tags

NGSS.MS-PS1-1

An element has 52 protons, how many electrons does it contain?

• 52 electrons in the extremely dense nucleus
• 52 electrons floating in the negatively charged orbital
• 52 electrons floating in the positively charged orbital
• 52 electrons in the negatively charged nuclues

Tags

NGSS.MS-PS1-1

Which of the following elements has 18 electrons?

• Flourine
• Helium
• Argon
• Chlorine

What types of particles are found in the cloud surrounding the atom's nucleus?

• Positively charged particles and negatively charged particles
• Negatively charged particles only
• Neutral particles and positively charged particles
• Positively charged particles only

Tags

NGSS.MS-PS1-1

What is the difference between the number of electrons in an atom of Calcium, Ca, and the number of electrons in an atom of Aluminum, Al?

• 20
• 7
• 13
• 27

Tags

NGSS.MS-PS1-1

Which of the following best describes an electron?

• It has no charge and about the same mass as a proton
• It has a negative charge and much less mass than a proton
• It has a positive charge and much more mass than a neutron
• It has a negative charge and about the same mass as a neutron

In a stable atom, the atomic number is equal to...

• neutrons
• electrons
• atomic mass
• what is a stable atom?

Tags

NGSS.MS-PS1-1

The first orbital can hold a maximum of how many electrons?

• 2
• 3
• 8
• 6

Tags

NGSS.MS-PS1-1

How many electrons does an atom with 8 protons have?

• 8
• 16
• 15.99
• 24

Tags

NGSS.MS-PS1-1

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