Qz A Changes Chemical and Physical

What is the primary difference between physical and chemical changes in matter?

• Physical changes are permanent while chemical changes are temporary
• Chemical changes only occur in laboratories
• Physical changes alter appearance without changing substance identity, while chemical changes create new substances
• Chemical changes never release energy

Tags

NGSS.MS-PS1-4

In astronomy, why do stars appear different colors?

• Due to chemical reactions changing their composition
• Because of differences in their temperature and energy distribution
• Due to atmospheric interference
• Because of their age only

Tags

NGSS.HS-PS4-3

What type of change occurs when carbon dioxide on Mars transforms from gas to solid?

• Chemical change
• Nuclear change
• Physical change
• Molecular decomposition

Which process represents a chemical change in stars?

• Changes in brightness
• Nuclear fusion of hydrogen into helium
• Gas compression
• Temperature fluctuations

Tags

NGSS.HS-ESS1-1

What tool do astronomers use to identify chemical changes in celestial bodies?

• Telescopes only
• Radio waves
• Spectroscopy
• Barometers

Tags

NGSS.HS-PS4-3

On Venus, what chemical change occurs in the atmosphere?

• Simple gas compression
• Formation of sulfuric acid from sulfur dioxide, oxygen, and water vapor
• Physical state changes of gases
• Color changes in the atmosphere

Tags

NGSS.HS-PS1-2

What type of change is mechanical weathering in geology?

• Chemical transformation
• Nuclear reaction
• Physical change
• Molecular rearrangement

In the formation of sandstone, why is the compression of quartz grains considered a physical change?

• Because new minerals are formed
• Because the chemical composition of quartz remains unchanged
• Because it involves heat
• Because it creates new substances

What process creates red soils and rocks on Earth and Mars?

• Physical compression
• Temperature changes
• Mechanical weathering
• Chemical oxidation of iron-rich minerals

Which process in cave formation represents a chemical change?

• Water flow
• Reaction of calcite with carbonic acid
• Physical erosion
• Temperature changes

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-4