Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

Which positive ion is found in the highest concentration inside most body cells?

1. APotassium (K⁺)
2. BSodium (Na⁺)
3. CCalcium (Ca²⁺)
4. DMagnesium (Mg²⁺)

What does the law of conservation of mass state?

1. AThe mass of products is always greater than the mass of reactants
2. BMass is lost as heat in every reaction
3. CMass is neither created nor destroyed in a chemical reaction
4. DGases have no mass

What are the building blocks of carbohydrates such as starch?

1. AAmino acids
2. BMonosaccharides (simple sugars) such as glucose
3. CFatty acids joined to a glycerol molecule
4. DNucleotides

Which statement describes a saturated fat?

1. AIt is always liquid at room temperature
2. BIts fatty acid chains have many carbon–carbon double bonds
3. CIts fatty acid chains have no carbon–carbon double bonds
4. DIt contains no carbon atoms

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

1. A6,02 L
2. B22,4 L
3. C273 L
4. D1,0 L

When the diaphragm contracts and the chest cavity gets bigger, what happens to the air pressure inside the lungs?

1. AIt falls, so air flows out
2. BIt does not change
3. CIt rises, so air flows in
4. DIt falls, so air flows in

Hydrogen is usually placed at the top of group 1. Which statement about hydrogen is correct?

1. AIt has a full outer shell like the noble gases
2. BIt has one valence electron like group 1 metals, but it is a nonmetal gas
3. CIt is an alkali metal that is solid at room temperature
4. DIt always forms H⁺ ions and never shares electrons

An element has the electron arrangement 2, 8, 8, 2. Where is it on the periodic table?

1. AGroup 2, period 4
2. BGroup 2, period 2
3. CGroup 8, period 2
4. DGroup 4, period 2