Chemistry Paper 1 Flashcards
1
Q
Why are alloys stronger than pure metals?
A
Different atoms are different sizes, this prevents layers from sliding past each other because the structure is irregular.
2
Q
How can you produce solid crystals from a solution?
A
Heat in a dish over a bunsen burner.
Once it has formed a saturated solution, allow it to cool slowly.
Then filter and dry the crystals.
3
Q
What ions do acids and alkalis form when dissolved in water?
A
Acids form H+ ions
Alkalis form OH- ions.
4
Q
What does aqueous solution mean?
A
Solute dissolved in water
5
Q
If you increase the concentration of an acid by a factor of 100, how will the pH change?
A
Decrease by a factor of 2
6
Q
A
