Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

İyon nedir?

1. AElektrik yükü taşıyan bir atom veya atom grubu
2. BÇekirdeğinde diğer atomlara göre fazladan nötron bulunan bir atom
3. Cİki özdeş atomdan oluşan bir molekül
4. DHiç elektronu olmayan bir parçacık

What does the law of conservation of mass state?

1. AGases have no mass
2. BMass is neither created nor destroyed in a chemical reaction
3. CMass is lost as heat in every reaction
4. DThe mass of products is always greater than the mass of reactants

Su neden sıklıkla evrensel çözücü olarak adlandırılır?

1. ADiğer yaygın sıvılardan daha fazla maddeyi çözer
2. BMolekülünde hiçbir yerde kısmi yük yoktur, bu yüzden her şeyle karışır
3. CHer maddeyi tamamen çözer
4. DDünya'da bulunan tek sıvıdır

According to the Brønsted–Lowry definition, what is an acid?

1. AAn electron pair donor
2. BA proton (H⁺) acceptor
3. CA proton (H⁺) donor
4. DA hydroxide ion donor

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

1. A6
2. B5
3. C2
4. D3

Why must temperatures be in kelvin in gas law calculations?

1. AThe kelvin scale has smaller degrees, which gives more precise answers
2. BKelvin values are always below 100
3. CGas volume and pressure are proportional to the absolute temperature
4. DCelsius can only be used for liquids

What is the formula of iron(III) chloride?

1. AFe₂Cl₃
2. BFeCl₂
3. CFe₃Cl
4. DFeCl₃

Starch and cellulose are both made entirely of glucose units, yet humans can digest starch but not cellulose. Why?

1. AThe glucose units are linked differently, and humans lack an enzyme to break cellulose's links
2. BStarch contains nitrogen, which makes it easier to digest
3. CCellulose is really made of amino acids, not glucose, so stomach acid cannot break it
4. DCellulose dissolves in water, so it is lost from the gut