Periodic Table, Atomic Structure & Types of Bonds

Refer to the chemical equations in the diagram below.  Which elements would be needed inorder for both chemical reactions to occur?

• Carbon

• Hydrogen

• Oxygen

• All are needed

Tags

NGSS.MS-LS1-6

When identifying if a molecule is POLAR, the molecule than has 

• a positive (+) and negative (-) end.

• the ability to be attracted molecule to molecule.

• the ability to be attracted molecule to other molecules than itself.

• All are correct

What is cohesion?

• attraction between two different molecules

• attraction between the same molecules

• when a substance dissolves into another subsubstance

• another word for molecules

TRUE or FALSE: the cohesive attraction of molecules to molecules are due to INTERMOLECULAR forces.

• TRUE

• FALSE

What is adhesion?

• attraction between two different molecules

• attraction between the same molecules

• when a substance dissolves into another substance

• another word for molecules

Why is water considered to be a polar molecule?

• Oxygen has a slightly positive side and hydrogen has a slightly negative side.

• The carbon makes the hydrogen bond with calcium.

• Water is not polar, it is nonpolar like oil.

• Oxygen has a slightly negative side and hydrogen has a slightly positive side.

Tags

NGSS.HS-ESS2-5

NGSS.HS-PS2-6

The tendency of water droplets to stick to each other is...

• ahesion

• capillary action

• surface tension

• cohesion

The tendency for water droplets to stick to other objects is...

• adhesion

• capillary action

• surface tension

• cohesion

An atom of an element consists of

• Protons and neutrons in the nucleus with electrons in orbitals or shells on the outside.

• Protons in the nucleus and electrons in orbitals or shells on the outside.

• Protons and electrons in the nucleus and neutrons in orbitals on the outside.

• None are correct

Tags

NGSS.MS-PS1-1

Identify the correct charges of the parts of an atom

• Protons (+), Neutrons (neutral) & Electrons (-)

• Protons (-), Neutrons (+) & Electrons (neutral)

• Protons (neutral), Neutrons (-) & Electrons (+)

• None are correct