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Sebuah larutan memiliki pH 3. Bagaimana larutan itu disebut?

1. ANetral
2. BAsam
3. CBasa
4. DJenuh

How does increasing the concentration of a reactant in solution usually affect the reaction rate?

1. AThe rate stays the same
2. BThe reaction stops
3. CThe rate increases
4. DThe rate decreases

What is the change from a liquid to a solid called?

1. AEvaporation
2. BMelting
3. CFreezing
4. DCondensation

A piece of metal has a density of 8 g/cm³ and a volume of 5 cm³. What is its mass?

1. A0,625 g
2. B13 g
3. C40 g
4. D1,6 g

During digestion, large molecules are broken down by adding water across their bonds. What is this reaction called?

1. ACombustion
2. BCondensation
3. CPolymerisation
4. DHydrolysis

Apa yang terjadi pada suhu air es selama es mencair?

1. ATetap pada 0 °C sampai semua es mencair
2. BNaik terus-menerus selama itu
3. CTurun di bawah 0 °C
4. DLangsung naik sampai 100 °C

Notasi isotop mana yang menggambarkan atom dengan 8 proton dan 10 neutron?

1. AArgon-18
2. BOksigen-10
3. CNeon-18
4. DOksigen-18

For N₂ + 3H₂ → 2NH₃, 1 mol of N₂ is mixed with 2 mol of H₂. Which reactant is limiting?

1. AN₂, because there is less of it
2. BH₂, because 1 mol of N₂ would need 3 mol of H₂
3. CNeither, because both are used up exactly
4. DNH₃, because it is the product