Робочий аркуш «Хімія для вступних іспитів на медсестринство» з відповідями

Which of these is a chemical property?

1. ADensity
2. BColour
3. CBoiling point
4. DFlammability

What is the name for the attraction of water molecules to each other?

1. AOsmosis
2. BDiffusion
3. CCohesion
4. DAdhesion

In a solution, what is the solvent?

1. AThe substance that is dissolved, usually present in the smaller amount
2. BThe gas given off when a solid dissolves
3. CThe substance that does the dissolving, usually present in the larger amount
4. DAny solid that will not dissolve, however long it is stirred

In a closed container, 10 g of substance A reacts completely with 5 g of substance B. What is the total mass of the products?

1. A10 g
2. B50 g
3. C5 g
4. D15 g

Why is a carbon dioxide extinguisher effective on many fires?

1. ACO₂ reacts chemically with the fuel to make it non-flammable
2. BCO₂ is a liquid that soaks into the fuel
3. CCO₂ adds oxygen to cool the flames
4. DCO₂ is denser than air and pushes oxygen away from the fire

During digestion, large molecules are broken down by adding water across their bonds. What is this reaction called?

1. ACombustion
2. BPolymerisation
3. CCondensation
4. DHydrolysis

What is the formula of iron(III) chloride?

1. AFeCl₂
2. BFe₃Cl
3. CFe₂Cl₃
4. DFeCl₃

Який зв'язок найполярніший?

1. ACl–Cl
2. BH–F
3. CH–H
4. DC–H