Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

What range does the common pH scale cover?

1. A1 to 10
2. B0 to 14
3. C0 to 100
4. D−7 to +7

What are the building blocks (monomers) of proteins?

1. AFatty acids
2. BSimple sugars
3. CNucleotides
4. DAmino acids

What is the name for the attraction of water molecules to each other?

1. ADiffusion
2. BCohesion
3. COsmosis
4. DAdhesion

How many oxygen atoms are in one formula unit of calcium nitrate, Ca(NO₃)₂?

1. A5
2. B3
3. C2
4. D6

What is the conjugate base of nitric acid, HNO₃?

1. ANO₃⁻
2. BHNO₂
3. CNO₂⁻
4. DH₂NO₃⁺

Kütlesi 50 g ve hacmi 20 cm³ olan bir cismin yoğunluğu nedir?

1. A2,5 g/cm³
2. B70 g/cm³
3. C0,4 g/cm³
4. D1000 g/cm³

Gently heating DNA separates its two strands, but each strand stays in one piece. Why?

1. AThe two strands are joined by ionic bonds that melt first
2. BEach strand is held together by hydrogen bonds, while the two strands are joined by covalent bonds
3. CHeat converts DNA into a protein
4. DThe strands are held together by weak hydrogen bonds, while each strand's backbone is covalent

Diamond is extremely hard and has a very high melting point. Which explanation is correct?

1. AIt is made of separate small molecules with strong forces between them
2. BEach carbon is covalently bonded to four others in a giant network
3. CIt contains delocalised electrons like a metal
4. DIt is held together by ionic bonds between C⁺ and C⁻ ions