Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

What does organic chemistry study?

1. AOnly the noble gases
2. BCompounds made of metals
3. COnly compounds found in plants
4. DCompounds based on carbon

What does the law of conservation of mass state?

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

According to the Arrhenius definition, what does an acid produce in water?

1. AHydroxide ions (OH⁻)
2. BSodium ions (Na⁺)
3. COxide ions (O²⁻)
4. DHydrogen ions (H⁺)

Why do group 1 metals such as sodium react so easily?

1. AThey easily gain one extra electron
2. BTheir nuclei contain no neutrons
3. CThey have one outer electron that is easily lost
4. DThey have a full outer shell of electrons

A reaction has a theoretical yield of 20 g, but only 15 g of product is collected. What is the percent yield?

1. A133%
2. B75%
3. C25%
4. D5%

How many moles of gas are in 44,8 L at STP (0 °C and 1 atm)?

1. A2 mol
2. B44,8 mol
3. C0,5 mol
4. D22,4 mol

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. B0,05 M
3. C2 M
4. D0,1 M

Bir balon 300 K'de 2,0 L gaz içeriyor. Sabit basınçta 450 K'e ısıtılıyor. Yeni hacim nedir?

1. A2,0 L
2. B3,0 L
3. C4,5 L
4. D1,3 L