Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

In a chemical equation, what are the reactants?

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

Which group of biological molecules includes fats, oils and cholesterol?

1. ACarbohydrates
2. BNucleic acids
3. CProteins
4. DLipids

What does the double arrow (⇌) in a chemical equation show?

1. AThe reaction is very fast
2. BThe reaction is reversible
3. CThe reaction releases heat
4. DThe reaction needs a catalyst

When diluting a concentrated acid, which method is safe?

1. AAdd the water slowly to the acid
2. BAdd the water quickly to the acid
3. CAdd the acid slowly to the water
4. DMix them in any order, as long as it is fast

Hangi element en elektronegatiftir?

1. AFlor
2. BDemir
3. CHelyum
4. DSodyum

Hangi değişiklik bir parça tebeşirin asitle daha hızlı tepkime vermesini sağlar?

1. AAsidi buzdolabında soğutmak
2. BTebeşiri toz hâline getirmek
3. CAsidi daha fazla suyla seyreltmek
4. DTek büyük bir tebeşir parçası kullanmak

A carboxylic acid reacts with an alcohol in the presence of an acid catalyst. What are the products?

1. AAn alkane and oxygen
2. BA salt and hydrogen
3. CAn amino acid and carbon dioxide
4. DAn ester and water

Orange bromine water is shaken with two hydrocarbons. With hexene it turns colourless; with hexane it stays orange. What does this show?

1. AHexene contains a C=C double bond; hexane does not
2. BHexane contains a C=C double bond; hexene does not
3. CBoth contain double bonds, but hexane reacts more slowly
4. DHexene is an alcohol and hexane is an acid