Properties & Change Unit Review

Who is considered the father of the Periodic Table of the Elements?

• Dmitri Mendeleev

• John Rutherford

• Albert Einstein

• Democritus

Answer explanation

Dmitri Mendeleev is recognized as the father of the Periodic Table for organizing elements by atomic mass and predicting the properties of undiscovered elements, establishing a systematic framework for chemistry.

Tags

NGSS.HS-PS1-1

Which crosscutting concept is the primary basis for the organization of the Periodic Table?

• Patterns

• Systems

• Matter & Energy

• Cause & Effect

• Stability & Change

Answer explanation

The Periodic Table is organized based on patterns in the properties of elements, such as atomic number and electron configuration. These patterns help predict the behavior and relationships of elements, making 'Patterns' the correct choice.

Tags

NGSS.MS-PS1-1

Complete the rhyme: In a chemical reaction, ​ (a)   ​ (b)   ​ (c)   they ​ (d)   .

• change

• rearrange

• don't

• atoms

• do

• molecules

Answer explanation

In a chemical reaction, atoms change and rearrange; they don't disappear. Thus, the correct completion is: 'In a chemical reaction, atoms change, rearrange, they don't.'

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Drag and drop the properties listed into the proper category.

Groups:

(a) Physical Properties

,

(b) Chemical Properties

• conductivity
• ductility

• malleability
• pH level
• chemical stability
• flammability

Tags

NGSS.MS-PS1-2

Drag and drop the properties listed into the proper category.

Groups:

(a) Physical Properties

,

(b) Chemical Properties

• melting point
• oxidation state
• density
• toxicity
• hardness
• reactivity

Tags

NGSS.MS-PS1-2

Drag and drop the types of change into their proper category.

Groups:

(a) Physical Change

,

(b) Chemical Change

• Crushing
• Chopping
• Rusting
• Melting

• Burning
• Digestion

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Drag and drop the types of change into their proper category.

Groups:

(a) Physical Change

,

(b) Chemical Change

• Dissolving
• Combustion

• Freezing
• Corrosion
• Decomposition
• Breaking

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the Periodic Table, which elements have the most in common?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Match the properties with their best use.

• Mirrors

• Thermal, Non-conductive

• Electrical Wiring

• Durable, Conductive of Heat

• Balloons

• Ductile, Conductive

• Frying Pans

• Low density gas, Non-reactive

• Heat Shields

• Hard, Smooth, High Luster

Tags

NGSS.MS-PS3-3

Which of the following are signs of a chemical change?

• Production of Light

• Production of Gas

• Phase Change

• Change in Shape

• Formation of a Precipitate

Answer explanation

Signs of a chemical change include production of light, gas, and formation of a precipitate. Phase change and change in shape are physical changes, not chemical.

Tags

NGSS.MS-PS1-2