Simple Experiments and What They Show Flashcards
(21 cards)
What do we learn by melting ice?
That heat can change a solid into a liquid (a state change).
What happens when you mix baking soda and vinegar?
A fizzy reaction that makes carbon dioxide gas.
Why do objects float or sink?
Because of their density compared to water.
Why do we wear goggles in experiments?
To protect our eyes from chemicals or splashes.
What’s the first step of a science experiment?
Asking a question or making a prediction (a hypothesis).
What’s a fair test?
A test where only one thing changes at a time.
What happens to water when it boils?
It turns from a liquid into a gas
What happens when chocolate melts?
It goes from a solid to a liquid with heat.
What do seeds need to grow?
Water, warmth, and air.
What happens to a shadow when the light moves?
The shadow changes position and size.
How do you test what materials are waterproof?
Pour water on them and see if it soaks through.
What is a prediction in science?
A guess based on what you already know.
What’s an observation?
Something you notice using your senses.
Why write down what you see in an experiment?
So you remember and learn from it.
How do you test floating and sinking?
Drop items into water and see what happens.
What happens when sugar is stirred in warm water?
It dissolves faster than in cold water.
What is freezing?
When a liquid becomes a solid.
What does transparent mean?
You can see through it.
What does absorbent mean?
It soaks up liquid.
What does waterproof mean?
Liquid can’t get through it.
What do you do if your experiment doesn’t work?
Try again and change one thing to see what happens.
