Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

What does the rate of a reaction measure?

1. AHow quickly reactants are used up or products are formed
2. BHow hot the reaction gets
3. CHow much energy the final products contain
4. DHow much product forms in total by the end

What is an alpha particle made of?

1. APure electromagnetic energy
2. B1 proton and 1 electron
3. CA single high-energy electron
4. D2 protons and 2 neutrons

What range does the common pH scale cover?

1. A1 to 10
2. B0 to 14
3. C0 to 100
4. D−7 to +7

Bir periyotta soldan sağa gidildikçe atom yarıçapı genellikle nasıl değişir?

1. ATamamen aynı kalır
2. BAzalır
3. CÖnce iki katına çıkar, sonra yarıya iner
4. DArtar

Which list is in order from smallest to largest mass?

1. AGram, milligram, kilogram
2. BMilligram, kilogram, gram
3. CKilogram, gram, milligram
4. DMilligram, gram, kilogram

A bag of 5% (w/v) glucose solution (called 5% dextrose in the US) contains 5 g of glucose per 100 mL. How many grams of glucose are in 1 L?

1. A5 g
2. B500 g
3. C0,5 g
4. D50 g

In terms of bonds, why is a reaction exothermic?

1. ANo bonds are broken in exothermic reactions
2. BMore energy is released forming new bonds than is absorbed breaking old ones
3. CForming bonds always absorbs energy
4. DMore energy is absorbed breaking old bonds than is released forming new ones

For N₂ + 3H₂ → 2NH₃, 1 mol of N₂ is mixed with 2 mol of H₂. Which reactant is limiting?

1. ANeither, because both are used up exactly
2. BH₂, because 1 mol of N₂ would need 3 mol of H₂
3. CNH₃, because it is the product
4. DN₂, because there is less of it