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Carbon has an atomic mass of 12. What is the mass of 1 mole of carbon atoms?

1. A1 g
2. B24 g
3. C6 g
4. D12 g

Apa sebutan untuk kolom vertikal dalam tabel periodik?

1. APeriode
2. BGolongan
3. CDeret
4. DKulit

What is a single covalent bond?

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

What is the name of the compound CaCO₃?

1. ACalcium oxide
2. BCalcium carbonate
3. CCalcium carbide
4. DCarbon calcium trioxide

What is nuclear fission?

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

Which reacts more vigorously with water, potassium or sodium?

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

Suatu reaksi menyerap 50 kJ energi dari lingkungan. Pernyataan mana yang benar?

1. ATidak terjadi perubahan energi, karena energi kekal
2. BReaksi endotermik, dan produk memiliki energi lebih kecil daripada pereaksi
3. CReaksi eksotermik, dan produk memiliki energi lebih kecil daripada pereaksi
4. DReaksi endotermik, dan produk memiliki energi lebih besar daripada pereaksi

5,85 g of NaCl (molar mass 58,5 g/mol) is dissolved to make 500 mL of solution. What is the molarity?

1. A0,2 M
2. B2 M
3. C0,1 M
4. D0,05 M