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What is a single covalent bond?

1. AOne electron transferred from one atom to another
2. BOne pair of electrons shared between two atoms
3. CThe attraction between two oppositely charged ions
4. DTwo pairs of electrons shared between two atoms

What should a student always wear to protect the eyes when working with chemicals?

1. AReading glasses
2. BSafety goggles
3. CSunglasses
4. DContact lenses

What is the melting point of a substance?

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

What feature makes a hydrocarbon an alkene?

1. AOnly carbon–carbon single bonds
2. BAn –OH group
3. CAt least one carbon–carbon double bond
4. DA ring of six carbon atoms with no hydrogen

Sebuah atom klorin-37 memiliki 17 proton. Berapa neutron yang dimilikinya?

1. A20
2. B17
3. C37
4. D54

Which reacts more vigorously with water, potassium or sodium?

1. ASodium, because it has fewer electron shells to shield its electron
2. BThey react equally, because both are in group 1
3. CPotassium, because its outer electron is farther from the nucleus
4. DSodium, because its outer electron is farther from the nucleus

Suatu zat meleleh pada 801 °C, tidak menghantarkan listrik sebagai padatan tetapi menghantarkan saat lebur. Zat jenis apa yang paling mungkin?

1. ASenyawa ionik
2. BZat kovalen sederhana (molekuler)
3. CLogam
4. DGas mulia

Sebuah ion memiliki 12 proton dan 10 elektron. Ion apakah itu?

1. ANa⁺
2. BNe
3. CMg²⁻
4. DMg²⁺