Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

What is oxidation, in terms of electrons?

1. AGain of electrons
2. BLoss of electrons
3. CGain of neutrons
4. DLoss of protons

Hangi madde bir bazdır?

1. ASirke (asetik asit)
2. BHidroklorik asit (HCl)
3. CLimon suyu (sitrik asit)
4. DSodyum hidroksit (NaOH)

In a chemical equation, what are the reactants?

1. AThe new substances formed, written to the right of the arrow
2. BThe starting substances, written to the left of the arrow
3. CThe numbers written in front of each formula
4. DThe catalysts written above the arrow

What are London dispersion forces?

1. AForces that hold protons together in the nucleus
2. BWeak, temporary attractions caused by shifting electrons in molecules
3. CStrong bonds formed by transferring electrons
4. DAttractions between a hydrogen atom and a metal ion

A student tests how temperature affects the rate of a reaction. What is the independent variable?

1. AThe volume of acid, which is kept the same
2. BThe reaction rate
3. CThe type of beaker used
4. DThe temperature

A reaction has ΔH = −890 kJ/mol. What does the negative sign tell you?

1. AThe reaction needs a catalyst
2. BThe reaction is at equilibrium
3. CThe reaction is exothermic
4. DThe reaction is endothermic

Why does atomic radius decrease from left to right across a period?

1. AEach element adds a new electron shell
2. BMore protons pull the electrons of the same outer shell closer
3. CNeutrons push the electrons outward less strongly
4. DThe atoms lose electrons across the period

Bir gaz, 6 L'lik bir kapta 1 atm basınçta. Aynı sıcaklıkta 2 L'ye sıkıştırılıyor. Yeni basınç nedir?

1. A12 atm
2. B4 atm
3. C0,33 atm
4. D3 atm