โ SetsScience โ Set 7
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Science Practice Questions โ Set 7
10 free Science reviewer questions with answers and explanations. Pindutin ang sagot mo para makita agad kung tama โ kasama na ang paliwanag. Set 7 of 10.
61
Why is H2O (water) a polar molecule?
62
Solution A has a pH of 2. Solution B has a pH of 4. This means:
63
When a 10kg log of wood is completely burned, it produces 1kg of ash. Where did the "missing" 9kg of mass go?
64
Why does evaporation make you feel cold?
65
An atom has 6 protons, 7 neutrons, and 6 electrons. What is this element?
66
Why does salt (NaCl) conduct electricity when dissolved in water, but sugar (C12H22O11) does not?
67
Given the reaction N_2 + 3H_2 leftrightarrow 2NH_3 + textHeat. How could you increase the production of textNH_3 (ammonia)?
68
What is the fundamental difference between an ionic bond and a covalent bond?
69
What does "balancing a chemical equation" actually satisfy?
70