Physical Science Midterm Exam Practice 2022

Ionic bonds involve ______ of electrons, covalent bonds involve _____ of electrons

• transferring/making

• transferring/sharing

• sharing/transferring

• sharing/making

Tags

NGSS.HS-PS1-3

How many protons are in the atom of Krypton?

• 120

• 84

• 48

• 36

Tags

NGSS.MS-PS1-1

In the Lewis-dot structure below, how many electrons are needed for a filled outermost energy level? 

• 0

• 1

• 8

• 7

This diagram shows a way of representing.....

• The number of electrons bromine has

• The number of valence electrons bromine has

• The number of protons bromine has

• The number of neutrons bromine has

Tags

NGSS.MS-PS1-1

A type of chemical bond that is formed from the attraction of an atom that has lost an electron for an atom that has gained an electron is called a(n)

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

What family on the periodic table is unreactive?

• Halogens

• Noble gases

• Alkali metals

• Alkaline-Earth metals

Which two elements have the same number of valence electrons?

• Carbon and Aluminum

• Boron and Carbon

• Nitrogen and Phosphorus

• Oxygen and Fluorine

Which statement is true about the picture below?

• The bond is ionic because electrons are being shared.

• The bond is ionic because electrons are being transferred.

• The bond is covalent because electrons are being shared.

• The bond is covalent because electrons are being transferred.

Tags

NGSS.HS-PS1-2

A type of chemical bond that consists of positive ions in a sea of electrons is a(n)

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

Which of the following is an alternative representation of the covalently bonded oxygen molecule below.

• 
• 
• 
• O2

Tags

NGSS.MS-PS1-1