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Which type of radiation is the most penetrating?

1. AGamma rays
2. BBeta particles
3. CAlpha particles
4. DThey are all equally penetrating

What is oxidation, in terms of electrons?

1. AGain of neutrons
2. BGain of electrons
3. CLoss of electrons
4. DLoss of protons

What is the formula of methane, the main gas in natural gas?

1. ACH₂
2. BCH₄
3. CC₂H₆
4. DCO₂

Apa yang dilakukan larutan penyangga (buffer)?

1. AMenahan perubahan pH ketika sedikit asam atau basa ditambahkan
2. BMenjaga suhu larutan tetap konstan
3. CMengubah asam apa pun menjadi basa kuat
4. DMempercepat reaksi penetralan sehingga pH cepat mencapai tepat 7

A reaction has a theoretical yield of 20 g, but only 15 g of product is collected. What is the percent yield?

1. A5%
2. B133%
3. C75%
4. D25%

Water climbs up a narrow glass tube. Which property mainly causes this?

1. AEvaporation of water from the tube
2. BAdhesion of water to the glass
3. CWater's high boiling point
4. DLow density of water

What is the percentage by mass of nitrogen in ammonium nitrate, NH₄NO₃ (N = 14, H = 1, O = 16; molar mass 80 g/mol)?

1. A17,5%
2. B35%
3. C28%
4. D60%

Ketika gula larut dalam air, mengapa itu bukan perubahan kimia?

1. AMolekul gula tetap gula dan dapat diperoleh kembali
2. BKalor selalu dilepaskan saat gula larut
3. CGula bereaksi dengan air membentuk senyawa baru
4. DGula dimusnahkan dan digantikan oleh air