Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

What is a cation?

1. AA negatively charged ion
2. BA neutral atom
3. CA molecule with no charge
4. DA positively charged ion

What is a horizontal row of the periodic table called?

1. AA group
2. BA block
3. CA family
4. DA period

What is the term for anything that has mass and takes up space?

1. AMatter
2. BEnergy
3. CHeat
4. DForce

An exothermic reaction is at equilibrium. What happens if the temperature is raised?

1. AThe equilibrium does not change
2. BThe equilibrium shifts toward the reactants
3. CThe reaction becomes endothermic
4. DThe equilibrium shifts toward the products, raising the yield

Which assumption is made about an ideal gas?

1. AIts particles stay still at room temperature
2. BIts particles lose energy in every collision
3. CIts particles are large, closely packed and strongly attracted
4. DIts particles have no attraction to each other

How many covalent bonds does a carbon atom usually form?

1. A4
2. B2
3. C3
4. D1

Many ethene (C₂H₄) molecules join together to form poly(ethene), a plastic. What type of reaction is this?

1. ACondensation polymerisation, in which a water molecule is released at each new link
2. BHydrolysis, in which water breaks each monomer apart
3. CCombustion, in which ethene reacts with oxygen
4. DAddition polymerisation, in which the C=C double bonds open up to link the monomers

Why is gamma radiation used to sterilise sealed medical supplies such as syringes?

1. AIt adds a protective chemical coating to the items
2. BIt heats the items to very high temperatures, so the microbes are burned away inside the pack
3. CIt passes through the packaging and kills microbes without making the items radioactive
4. DIt is stopped by the packaging, so it only cleans the outside