ใบงาน เคมีสำหรับข้อสอบเข้าพยาบาล พร้อมเฉลย

Which element is a metalloid?

1. ASulfur
2. BArgon
3. CSilicon
4. DSodium

A cleaning solution has a pH of 12. How is it described?

1. AStrongly acidic
2. BStrongly basic
3. CWeakly acidic
4. DNeutral

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

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

ธาตุใดมีค่าอิเล็กโทรเนกาทีวิตีสูงที่สุด

1. Aฮีเลียม
2. Bฟลูออรีน
3. Cโซเดียม
4. Dเหล็ก

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

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

What is the formula of the hydroxide ion?

1. AH₃O⁺
2. BO²⁻
3. COH⁻
4. DOH⁺

ลูกโป่งบรรจุแก๊ส 2.0 L ที่ 300 K ที่ความดันคงที่ ให้ความร้อนถึง 450 K ปริมาตรใหม่คือเท่าใด

1. A4.5 L
2. B2.0 L
3. C3.0 L
4. D1.3 L

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 white ring forms where the gases are heaviest
2. BThe HCl molecules diffuse faster than NH₃ molecules
3. CThe lighter NH₃ molecules diffuse faster than HCl molecules
4. DBoth gases diffuse at the same speed