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What is the melting point of a substance?

1. AThe temperature at which its solid turns into a liquid
2. BThe temperature at which it catches fire
3. CThe temperature at which its liquid turns into a gas
4. DThe temperature at which it dissolves in water

Which method separates two liquids with different boiling points, such as alcohol and water?

1. AUsing a magnet
2. BSieving
3. CDistillation
4. DFiltration

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

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

What is nuclear fission?

1. AThe burning of uranium in oxygen
2. BThe joining of two light nuclei to form a heavier nucleus
3. CThe splitting of a heavy nucleus into smaller nuclei
4. DThe loss of electrons from an atom

According to the Brønsted–Lowry definition, what is an acid?

1. AA hydroxide ion donor
2. BA proton (H⁺) donor
3. CAn electron pair donor
4. DA proton (H⁺) acceptor

How is 0,00045 written in scientific notation?

1. A4,5 × 10⁴
2. B4,5 × 10⁻⁵
3. C4,5 × 10⁻³
4. D4,5 × 10⁻⁴

Sebuah balon berisi 2,0 L gas pada 300 K. Pada tekanan tetap, balon dipanaskan hingga 450 K. Berapa volume barunya?

1. A4,5 L
2. B1,3 L
3. C2,0 L
4. D3,0 L

An element in period 3 forms an oxide with the formula X₂O₃. Which element is X?

1. AMagnesium
2. BSodium
3. CAluminium
4. DPhosphorus