Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

What do the letters STP stand for in gas chemistry?

1. AStable temperature point
2. BStandard time and pressure
3. CStandard temperature and pressure
4. DSpecific temperature and particles

Katalizör ne yapar?

1. ATükenmeden tepkimeyi hızlandırır
2. BTepkimenin ürünlerini değiştirir
3. CTepkime için girenleri sağlar
4. DTepkimeyi yavaşlatır ve tükenir

What is the molar mass of oxygen gas, O₂ (O = 16 g/mol)?

1. A16 g/mol
2. B8 g/mol
3. C48 g/mol
4. D32 g/mol

When a nucleus emits an alpha particle, how do its mass number and atomic number change?

1. AMass number falls by 4 and atomic number falls by 2
2. BMass number stays the same and atomic number rises by 1
3. CNeither changes
4. DMass number falls by 2 and atomic number falls by 4

What are isomers?

1. AAtoms of the same element with different numbers of neutrons
2. BCompounds with the same molecular formula but different structures
3. CCompounds with the same structure but different molecular formulas
4. DMolecules that contain the same number of bonds

What is the conjugate base of nitric acid, HNO₃?

1. ANO₂⁻
2. BNO₃⁻
3. CH₂NO₃⁺
4. DHNO₂

Which element has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁵?

1. ASulfur
2. BArgon
3. CFluorine
4. DChlorine

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

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