Is this an example of a chemical or physical change? Why?
Chemical, burning and light produced
Is this an example of a chemical or physical change? Why?
Chemical, bubbles with new gas
Which rock layer would have the oldest fossils? Youngest?
Bottom would have oldest, top would have youngest
Is this an example of a chemical or physical change? Why?
Physical, change of state of matter
Is this an example of a chemical or physical change? Why?
Physical, no new substance created
What forms at this plate boundary?
mid-ocean ridges
What forms at this plate boundary?
Deep ocean trench
What is this photo showing?
Erosion
Which picture represents a MIXTURE?
Picture W
Is this an example of a physical or chemical change? Why?
Chemical, light produced
Is this an example of a chemical or physical change? Why?
chemical, change in color
What would we do FIRST to separate this mixture of iron, salt and sand?
Use a magnet to separate the iron
Is this an example of a chemical or physical change? Why?
Chemical, change in color
Is this an example of a chemical or physical change? Why?
Physical, it is melting
Is this an example of a chemical or physical change? Why?
chemical, new solid formed
Is this an example of a chemical or physical change? Why?
chemical, change in color or change in composition
What process would we use to separate sand from a mixture of iron, salt and sand?
Filtration
How could we separate a mixture of sand and water?
Filtration
Which picture represents a MIXTURE?
Picture B
Is this an example of a chemical or physical change? Why?
Chemical, precipitate
Is this an example of a chemical or physical change? Why?
Physical, nothing new is being created. Bubbles are H2O vapor
What is the photo showing?
Continental drift
Is this an example of a chemical or physical change? Why?
Physical, melting