States of Matter
Which is an example of a liquid?
Water
What happens when baking soda and vinegar are mixed?
Bubbles form
What is a force?
A push or a pull
Which simple machine helps keep you safe in a car?
A seatbelt
A chemical change always makes something...
New
What is Matter?
Anything that takes up space
What forms when baking soda and vinegar bubble?
A gas
What happens when two objects collide?
They push on each other
What material would make a good bumper to absorb force?
Cotton balls
What type of change is baking a cake?
Chemical
What type of change is boiling water?
Physical
What is an example of a physical change?
Cutting paper
The harder the crash, the greater the...
force
What part of a bike helmet helps reduce the force of a fall?
The padding
If heat is produced during a reaction, what does that tell us?
It’s a chemical reaction
When sugar is stirred into water, what happens?
The sugar is still there but dissolved
Why is mixing vinegar and baking soda not a physical change?
It creates something new
How does a helmet protect your head during a fall or collision?
It absorbs some of the force so your head doesn’t get hurt
What does a seatbelt do during a crash?
Keeps your body from flying forward
What do you expect to see when lemon juice and baking soda are mixed?
Bubbles form as gas is made
When you dissolve sugar in water, is it a chemical change?
Yes, it’s a new substance
What clues tell us a chemical change happened?
Get something completely new
What happens when a moving ball hits a still ball?
Some of the ball’s energy moves to the other ball
What safety device can reduce the force of a fall?
A helmet
A toy car rolls down a ramp and hits a wall. What happens if you place a sponge between the wall and the car?
The sponge reduces the impact