Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

Hangi madde bir bazdır?

1. ASodyum hidroksit (NaOH)
2. BHidroklorik asit (HCl)
3. CSirke (asetik asit)
4. DLimon suyu (sitrik asit)

Where do the mole ratios used in stoichiometry come from?

1. AThe molar masses of the reactants
2. BThe coefficients of the balanced equation
3. CThe subscripts in each formula
4. DThe physical states of the substances

Which element exists naturally as diatomic molecules (two atoms joined together)?

1. AIron
2. BSodium
3. COxygen
4. DHelium

NaCl gibi iyonik bileşiklere özgü özellik hangisidir?

1. AMetaller gibi yumuşak olmaları ve kolayca eğilmeleri
2. BDüşük erime noktaları ve oda sıcaklığında gaz olmaları
3. CKuru katı hâlde elektriği iletmeleri
4. DYüksek erime noktaları; çözündüklerinde iletirler

Which assumption is made about an ideal gas?

1. AIts particles are large, closely packed and strongly attracted
2. BIts particles have no attraction to each other
3. CIts particles stay still at room temperature
4. DIts particles lose energy in every collision

Kalsiyum (Ca²⁺) ile klor (Cl⁻) arasında hangi bileşik oluşur?

1. ACa₂Cl₃
2. BCa₂Cl
3. CCaCl
4. DCaCl₂

Which approach best reduces a health worker's exposure to ionising radiation?

1. ARely only on wearing gloves
2. BWork faster without any shielding
3. CStand closer to the source so the job is finished sooner and exposure is shorter
4. DLimit the time near the source, increase the distance and use shielding

Magnesium burns as 2Mg + O₂ → 2MgO. What mass of MgO (40 g/mol) forms from 48 g of Mg (24 g/mol)?

1. A160 g
2. B80 g
3. C40 g
4. D48 g