Understanding Solids and Chemicals

What is a common misconception about chemicals?

• All chemicals are harmful

• Chemicals are only found in laboratories

• Chemicals can only be liquids or gases

• All chemicals are beneficial

Tags

NGSS.MS-PS1-3

What are the two main classes of solids?

• Liquid and gas

• Crystalline and amorphous

• Metallic and non-metallic

• Organic and inorganic

How do amorphous solids differ from crystalline solids in their melting points?

• Amorphous solids melt at a specific temperature

• Amorphous solids melt over a range of temperatures

• Amorphous solids have higher melting points

• There is no difference in melting points

What causes amorphous solids to melt gradually?

• Random arrangement of particles

• Uniform bond strength

• Crystalline structure

• High temperature resistance

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is NOT a characteristic of crystalline solids?

• Random atomic arrangement

• Anisotropic behavior

• Brittle nature

• Specific melting points

Tags

NGSS.MS-PS1-1

What are molecular solids made of?

• Metal alloys

• Individual atoms

• Ionic compounds

• Covalent compounds

Tags

NGSS.MS-PS1-1

Which type of solid has atoms arranged in an orderly pattern?

• Gaseous solids

• Liquid solids

• Crystalline solids

• Amorphous solids

Tags

NGSS.MS-PS1-1

Which of the following is a property of ionic solids?

• Soluble in water

• Low melting points

• Made of covalent compounds

• Soft texture

What makes metals malleable and ductile?

• Ionic bonding

• Weak Van der Waals forces

• Rigid crystal structure

• Sea of electrons

What is the significance of the 'sea of electrons' in metals?

• It allows metals to conduct heat and electricity

• It contributes to the rigidity of metals

• It makes metals non-conductive

• It prevents metals from being malleable

Tags

NGSS.HS-PS1-3