정답이 있는 간호학 입학 시험 대비 화학 학습지

금속의 전형적인 성질은 무엇인가요?

1. A전기를 잘 통한다
2. B열을 잘 전달하지 못한다
3. C대부분 실온에서 기체이다
4. D깨지기 쉬운 고체여서 산산이 부서진다

Where are the metalloids found on the periodic table?

1. AAlong the staircase line between the metals and the nonmetals
2. BIn group 18, at the far right edge of the table
3. CIn group 1, at the far left edge of the table
4. DIn the two separate rows at the bottom of the table

What does the rule "like dissolves like" mean?

1. AEvery substance dissolves in water
2. BOnly substances with identical formulas can ever dissolve in each other
3. CSolids dissolve only in other solids
4. DPolar solvents dissolve polar substances, and nonpolar solvents dissolve nonpolar ones

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

1. ASaturated
2. BIsotonic
3. CAmphoteric
4. DNeutral

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

1. A0
2. B2
3. C4
4. D1

A reaction has ΔH = −890 kJ/mol. What does the negative sign tell you?

1. AThe reaction is endothermic
2. BThe reaction is at equilibrium
3. CThe reaction is exothermic
4. DThe reaction needs a catalyst

How does soap help remove grease from skin?

1. AEach soap molecule has a polar end that attracts water and a nonpolar end that attracts grease
2. BSoap molecules are completely nonpolar, so they dissolve grease like a solvent
3. CSoap reacts with grease to form water and carbon dioxide
4. DSoap makes the grease more dense so it sinks

Samples of hydrogen gas (H₂) and oxygen gas (O₂) are at the same temperature. Which statement is correct?

1. ABoth move at the same average speed
2. BH₂ molecules have more kinetic energy and move faster
3. CThey have the same average kinetic energy, but H₂ molecules move faster
4. DO₂ molecules move faster because they are heavier