Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

What is gamma radiation?

1. AA stream of helium nuclei with a positive charge
2. BA slow-moving electron
3. CA fast stream of protons from the nucleus
4. DHigh-energy electromagnetic radiation with no mass or charge

Which electrons take part in chemical bonding?

1. AOnly the electrons in the first shell
2. BThe valence (outermost) electrons
3. CThe electrons closest to the nucleus
4. DAll electrons take part equally

What is the smallest particle of an element that still has the chemical properties of that element?

1. AA proton
2. BAn electron
3. CA nucleus
4. DAn atom

Metan gibi bir hidrokarbonun tam yanmasının ürünleri nelerdir?

1. AOksijen ve su
2. BKarbon ve hidrojen gazı
3. CKarbondioksit ve su
4. DKarbonmonoksit ve hidrojen

How does a mixture of iron filings and sulfur powder differ from the compound iron sulfide?

1. AThe mixture has a fixed ratio of iron to sulfur
2. BThe mixture is formed by a chemical reaction between the two elements
3. CThe mixture can be separated physically, for example with a magnet
4. DThe compound keeps the magnetic properties of iron

What is the oxidation number of an element in its uncombined (elemental) form, such as Fe or O₂?

1. AIt equals the group number
2. B+1
3. C0
4. D−1

When water boils, what is overcome?

1. AThe ionic bonds between H⁺ and O²⁻
2. BThe covalent O–H bonds inside each molecule
3. CHydrogen bonds between water molecules
4. DThe forces holding the oxygen nucleus together

Why does drinking seawater make dehydration worse?

1. ASeawater is hypotonic, so water rushes into cells and makes them burst
2. BSeawater is isotonic, so it cannot be absorbed
3. CSeawater is hypertonic, so the body loses extra water getting rid of the salt
4. DSeawater contains no water molecules the body can use