Which observation most likely indicates that only a chemical change has taken place?(1 point)
Responses
States of matter changes.
States of matter changes.
The change cannot be reversed.
The change cannot be reversed.
The shape changes.
The shape changes.
A reaction occurs.
A reaction occurs.
Use the table of observed changes to answer the question.
Change # Reacts with another substance? Temperature change? Gas, sound, or light produced? New substance formed?
1 yes yes yes yes
2 no yes yes no
3 yes yes yes yes
4 no no no no
Which changes shown in the table are physical changes?
(1 point)
Responses
1 and 4
1 and 4
2 and 3
2 and 3
2 and 4
2 and 4
1 and 2
2 and 4
Why is it a physical change to freeze water?(1 point)
Responses
Only a phase change occurs.
Only a phase change occurs.
Heat is released during the process.
Heat is released during the process.
The new and original substances are different.
The new and original substances are different.
A temperature change occurs.
Only a phase change occurs.
Which option is an example of a chemical change?(1 point)
Responses
burning wood
burning wood
stretching a rubber band
stretching a rubber band
folding paper
folding paper
chopping vegetables
burning wood
Which detail would be most relevant to this central idea?
Summer is the most fun season, because there is so much to do.
(1 point)
Responses
Some people burn if they stay in the sun too long.
Some people burn if they stay in the sun too long.
The warm weather is good for playing outside or going to the pool.
The warm weather is good for playing outside or going to the pool.
However, we don't live near the beach.
However, we don't live near the beach.
The bugs can really be a pain though.
The warm weather is good for playing outside or going to the pool.
A student is writing an argumentative essay about adopting shelter animals instead of buying pets. Which detail would not be relevant to the argument?(1 point)
Responses
Many dogs and cats need homes.
Many dogs and cats need homes.
Adopting shelter pets helps save lives.
Adopting shelter pets helps save lives.
Animals from pet stores are often unhealthy.
Animals from pet stores are often unhealthy.
Cats are more popular pets than dogs.