Lewis Structures Ao

In scientific terms, anything that represents something else, whether it's physical or conceptual, is called a ___

• theory

• model

• hypothesis

• chemical bond

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-2

Which molecular model uses perfectly spherical atoms connected by clearly defined bonds?

• the space-filling model

• the Lewis structure

• the condensed molecular structure

• the ball-and-stick model

Molecules are like groups of atoms hanging out close to each other because that's where their energy is ___

• minimized

• zero

• maximized

• quantized

Tags

NGSS.HS-PS1-4

In reality, the only thing connecting two atoms together in a chemical bond is a bunch of ___

• electrons

• protons

• photons

• neutrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In a covalent bond, where do the bonding electrons spend most of their time?

• between the nuclei

• in the nuclei

• radiating away from the nuclei

• equally distributed around the nuclei

If a scientific model were a perfect representation of reality, it would ___

• be in underwear catalogs

• win a Nobel Prize

• be built on incorrect assumptions

• cease being a model and become reality

Early scientists, including Isaac Newton, thought that atoms combined because they were ___

• shared regions of electrons

• literally sticky

• quantum mechanical in nature

• magnetic

In the 19th century, who discovered positive and negative charges associated with chemicals in certain situations?

• Gilbert Newton Lewis

• Jöns Jacob Berzelius

• Isaac Newton

• Linus Pauling

Tags

NGSS.HS-PS1-3

In 1916, which American chemist described a covalent bond as two atoms sharing electrons?

• Gilbert Newton Lewis

• Robert S. Mulliken

• Leo Baekeland

• Linus Pauling

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A 2D model that represents covalent bonds as lines and unbonded electrons as dots is called ___

• a space-filling model

• a line structural formula

• a ball-and-stick model

• a Lewis structure