정답이 있는 간호학 입학 시험 대비 화학 학습지

In a chemical reaction, what is the limiting reactant?

1. AThe catalyst that controls the speed
2. BThe reactant that runs out first and stops the reaction
3. CThe reactant that is left over at the end
4. DThe reactant with the largest mass

What does the law of conservation of mass state?

1. AMass is lost as heat in every reaction
2. BThe mass of products is always greater than the mass of reactants
3. CGases have no mass
4. DMass is neither created nor destroyed in a chemical reaction

What does the octet rule state?

1. AEvery stable molecule contains exactly 8 atoms
2. BAn atom can form a maximum of 8 covalent bonds
3. CEvery stable atom has exactly 8 protons in its nucleus
4. DAtoms tend to gain, lose or share electrons to get 8 outer electrons

At STP (0 °C and 1 atm), what volume does 1 mole of an ideal gas occupy?

1. A22.4 L
2. B6.02 L
3. C1.0 L
4. D273 L

What is a polymer?

1. AAn ion with more than one charge
2. BA large molecule built from many repeating smaller units called monomers
3. CA small molecule containing only two atoms of one element
4. DA mixture of several different elements

얼음물에서 얼음이 녹는 동안 온도는 어떻게 되나요?

1. A얼음이 모두 녹을 때까지 0 °C로 유지된다
2. B0 °C 아래로 떨어진다
3. C그 시간 내내 꾸준히 오른다
4. D곧바로 100 °C까지 오른다

What is the formula of calcium phosphate, made from Ca²⁺ and PO₄³⁻ ions?

1. ACa₃PO₄
2. BCaPO₄
3. CCa₃(PO₄)₂
4. DCa₂(PO₄)₃

Under which conditions does a real gas behave least like an ideal gas?

1. ALow pressure and low volume of particles
2. BHigh temperature and large container
3. CLow pressure and high temperature
4. DHigh pressure and low temperature