Chemical & Physical Change
Is mixing salt in a cup of water a physical or chemical change?
What is a Physical change?
How long is Earth's full rotation on its axis?
24 hours
An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an_____?
What is an unbalanced force?
What comes first primary or secondary succession?
Primary succession.
What structure controls what enters and leaves both plants and animal cells?
What is the cell membrane?
What is the main difference between physical and chemical change and how can you distinguish them?(Doesn't have to be the exact answer, just close to it)
Physical change can be reverted while chemical change can’t.
What causes phases of the moon?(Doesn't have to be the exact answer, just close to it)
The moons position to the Earth and Sun
If a 100 N net force acts on a 50 kg car, what is its acceleration?
2 m/s
Which succession comes after a flood.
Secondary succession
What is the Organelle found in plant cells and responsible for photosynthesis?
What is the Chloroplasts?
Is digesting food a physical or chemical change?
What is a Chemical change?
Why do we experience tides on Earth?(Doesn't have to be the exact answer, just close to it)
What is the Gravitational pull of the sun and moon?
If you push against a wall with a force of 10 N, how much force does the wall exert back on you?
10 N in the opposite direction.
What comes after a volcanic eruption?
What is Primary succession.
What is the Main function of the Mitochondria?
Produces energy for cells
How can you tell a chemical change has occurred?(Doesn't have to be the exact answer, just close to it)
Color, Temperature, precipitation, Etc.
Reason why Earth has a year?
Earth's rotation around the sun
What force opposes motion between two surfaces?
What is the main organism of Primary succession?
What are Moss and Lichen.
Which structure gives plants their shape?
What is the Cell Wall?
What is one example of a chemical change?
(Answers may vary)
Vinegar and Baking Soda(Just an example)
Which layer is visible from the sun during solar eclipse?
What is the Photosphere?
Which has more inertia: a bowling ball or a ping pong ball?
Bowling Ball?
What is the difference between primary succession and secondary succession?(Doesn't have to be the exact answer, just close to it)
Primary succession makes a habit live-able, and secondary re-stabilizes an already live-able habitat.
What is the role of the nucleus in both plants and animals?(Doesn't have to be the exact answer, just close to it)
Control the cells activities