Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

What are the units of molarity?

1. AGrams of solute per 100 g of solution
2. BGrams of solute per litre of solution (g/L)
3. CMoles of solute per litre of solution (mol/L)
4. DMoles of solute per kilogram of the solvent used

Tuzlu su hangi tür maddeye örnektir?

1. AHomojen karışım (çözelti)
2. BSaf element
3. CHeterojen karışım
4. DBileşik

Which process is exothermic (releases heat)?

1. AMelting a block of ice
2. BPhotosynthesis
3. CEvaporating water
4. DBurning methane gas

Why does keeping food in a refrigerator slow down spoilage?

1. ACold temperatures add preservatives to the food
2. BCold air contains no oxygen
3. CLower temperatures raise the activation energy of every reaction
4. DLower temperatures slow down chemical and microbial reactions

Metan gibi bir hidrokarbonun tam yanmasının ürünleri nelerdir?

1. AOksijen ve su
2. BKarbon ve hidrojen gazı
3. CKarbondioksit ve su
4. DKarbonmonoksit ve hidrojen

Al³⁺ ve O²⁻ iyonlarından oluşan alüminyum oksidin formülü nedir?

1. AAlO₃
2. BAlO
3. CAl₃O₂
4. DAl₂O₃

The true volume in a flask is 10,0 mL. A student measures it three times and gets 8,1 mL, 8,1 mL and 8,2 mL. How are these results best described?

1. AAccurate but not precise
2. BNeither accurate nor precise
3. CBoth accurate and precise
4. DPrecise but not accurate

A sealed bag of crisps (potato chips) packed at sea level looks puffed up when it is carried to a high mountain. Why?

1. AThe bag becomes thinner and weaker at altitude
2. BThe outside air pressure is lower, so the gas inside expands
3. CThe gas inside the bag is heated strongly by the mountain sunlight
4. DMore gas is produced by the crisps at altitude