Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

Which element is a metalloid?

1. AArgon
2. BSodium
3. CSilicon
4. DSulfur

At sea level, at what temperature does pure water freeze?

1. A0 °C (32 °F)
2. B100 °C (212 °F)
3. C−32 °C (−26 °F)
4. D32 °C (90 °F)

Sodyum ve potasyum hangi gruba aittir?

1. ASoy gazlar (18. grup)
2. BToprak alkali metaller (2. grup)
3. CHalojenler (17. grup)
4. DAlkali metaller (1. grup)

Uranium-235 and uranium-238 both have 92 protons. How many more neutrons does an atom of uranium-238 have?

1. A92
2. B3
3. C0
4. D146

What is a polymer?

1. AA mixture of several different elements
2. BA small molecule containing only two atoms of one element
3. CA large molecule built from many repeating smaller units called monomers
4. DAn ion with more than one charge

How does electronegativity change going down a group?

1. AIt stays the same
2. BIt increases
3. CIt decreases
4. DIt doubles with each period

A mixture contains sand, salt and water. Which sequence separates all three?

1. AEvaporate all the water first, then filter the salt away from the dry sand
2. BFilter to remove the sand, then distil the filtrate to collect water and leave salt
3. CUse a magnet to remove the salt, then filter the sand
4. DDistil first to remove the sand, then filter out the salt

Cotton soaked in ammonia (NH₃) and cotton soaked in hydrogen chloride (HCl) are placed at opposite ends of a glass tube. A white ring of ammonium chloride forms closer to the HCl end. What does this show?

1. AThe lighter NH₃ molecules diffuse faster than HCl molecules
2. BBoth gases diffuse at the same speed
3. CThe HCl molecules diffuse faster than NH₃ molecules
4. DThe white ring forms where the gases are heaviest