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Where are the transition metals located on the periodic table?

1. AIn the central block, groups 3 to 12
2. BAbove the noble gases
3. CIn group 18 on the far right
4. DIn group 1 on the far left

What is the maximum number of electrons the first electron shell can hold?

1. A8
2. B18
3. C1
4. D2

What does the rate of a reaction measure?

1. AHow hot the reaction gets
2. BHow quickly reactants are used up or products are formed
3. CHow much energy the final products contain
4. DHow much product forms in total by the end

An exothermic reaction is at equilibrium. What happens if the temperature is raised?

1. AThe equilibrium shifts toward the reactants
2. BThe reaction becomes endothermic
3. CThe equilibrium shifts toward the products, raising the yield
4. DThe equilibrium does not change

Why does ice float on liquid water?

1. AIce is denser than liquid water
2. BIce is less dense than liquid water
3. CIce contains trapped air from the freezer
4. DIce has a higher mass than the same volume of water

Water can act as an acid in some reactions and as a base in others. What is such a substance called?

1. AIsotonic
2. BNeutral
3. CSaturated
4. DAmphoteric

Darah dijaga mendekati pH 7,4 oleh larutan penyangga. Jika asam berlebih (H⁺) masuk ke darah, apa yang dilakukan ion bikarbonat (HCO₃⁻)?

1. AMengikat H⁺ sebagai asam karbonat, sehingga pH hanya turun sedikit
2. BMelepaskan lebih banyak ion H⁺ miliknya, membuat darah makin asam
3. CBerubah menjadi natrium klorida
4. DMenaikkan pH menjadi 14

Notasi isotop mana yang menggambarkan atom dengan 8 proton dan 10 neutron?

1. AArgon-18
2. BOksigen-10
3. CNeon-18
4. DOksigen-18