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What is an alloy?

1. AA pure metal in its natural state
2. BA nonmetal that conducts electricity
3. CA mixture of a metal with one or more other elements
4. DA compound formed when a metal reacts with oxygen

Apa sebutan untuk kolom vertikal dalam tabel periodik?

1. ADeret
2. BPeriode
3. CGolongan
4. DKulit

How many millilitres are in 1 litre?

1. A1000
2. B10,000
3. C100
4. D10

Perubahan mana yang akan membuat sepotong kapur tulis bereaksi lebih cepat dengan asam?

1. AMendinginkan asam di dalam kulkas
2. BMemakai satu bongkahan kapur yang besar
3. CMenggerus kapur menjadi bubuk
4. DMengencerkan asam dengan lebih banyak air

Which halogen is the most reactive?

1. AIodine
2. BBromine
3. CChlorine
4. DFluorine

How many lone (non-bonding) pairs of electrons are on the oxygen atom in a water molecule?

1. A4
2. B2
3. C1
4. D0

Why does food cook faster in a pressure cooker?

1. ASteam is trapped, so the water boils at a lower temperature
2. BThe higher pressure lowers the boiling point
3. CPressure itself breaks down the food, regardless of temperature
4. DThe higher pressure raises the boiling point, so the water is hotter

An isotope has a half-life of 8 days. How long does it take for 100 g to decay to 12,5 g?

1. A64 days
2. B24 days
3. C32 days
4. D16 days