Elements
Symbol for water?
H₂O
Name the 3 main states.
Solid, liquid, gas
What must you wear to protect your eyes?
Goggles
Everything is made of…?
Atoms
Is saltwater a mixture or a compound?
Mixture
Symbol For Oxygen?
O
What state is steam?
Gas
Should you eat in the lab?
No
What is a molecule?
Two or more atoms joined
Can you see all the parts in a solution?
No
Is gold a metal or non-metal?
Metal
Ice is what state?
Solid
What do you do if you spill something?
Tell the teacher
What is the center of an atom called?
Nucleus
Why is orange juice with pulp a mixture, not a solution?
You can see and separate the pulp
Why do scientists use chemical symbols instead of writing full element names?
Because symbols are shorter and universal, making them easier to use and understand.
Why does ice melt faster on a hot surface than a cold one?
Because heat energy makes the particles move faster and change to liquid more quickly.
Why is it important to follow all lab rules, even if the experiment seems easy?
Because accidents can still happen, and safety rules prevent injuries.
Why do atoms combine to form molecules?
To become more stable by sharing or gaining electrons.
Why does sugar disappear when mixed in hot tea, but not in cold tea, as fast?
Heat helps sugar dissolve faster into a solution.