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What is the SI unit of temperature?

1. ADegree Fahrenheit
2. BKelvin
3. CDegree Celsius
4. DJoule

What does the subscript 2 in H₂O tell you?

1. AWater has a charge of 2
2. BThere are two water molecules
3. CEach molecule contains two oxygen atoms
4. DEach molecule contains two hydrogen atoms

Where are the metalloids found on the periodic table?

1. AAlong the staircase line between the metals and the nonmetals
2. BIn group 18, at the far right edge of the table
3. CIn group 1, at the far left edge of the table
4. DIn the two separate rows at the bottom of the table

What does Avogadro's law state?

1. AEqual masses of all gases contain equal numbers of molecules under any conditions
2. BThe pressure of a gas doubles when its temperature is halved
3. CEqual volumes of gases at the same temperature and pressure contain equal numbers of molecules
4. DOne mole of any gas has a mass of 22,4 g

What is the oxidation number of sulfur in H₂SO₄?

1. A+6
2. B+2
3. C+4
4. D−2

Which equation shows a combustion reaction?

1. ACaCO₃ → CaO + CO₂
2. BZn + CuSO₄ → ZnSO₄ + Cu
3. CC₂H₅OH + 3O₂ → 2CO₂ + 3H₂O
4. DNaOH + HCl → NaCl + H₂O

Raising the temperature by 10 °C can roughly double the rate of many reactions. What is the main reason?

1. AThe activation energy itself is lowered by the extra heat
2. BThe particles become larger and easier to hit
3. CMany more collisions have at least the activation energy
4. DThe reaction becomes more exothermic

Reaksi 2SO₂ + O₂ ⇌ 2SO₃ mencapai kesetimbangan. Apa yang benar pada kesetimbangan?

1. AKedua reaksi telah berhenti sepenuhnya
2. BKonsentrasi pereaksi dan produk harus sama
3. CReaksi maju dan reaksi balik terus berlangsung dengan laju yang sama
4. DHanya produk yang ada di dalam wadah