ورقة عمل الكيمياء لامتحانات القبول في التمريض مع الإجابات

ذرة فيها 6 بروتونات و6 نيوترونات و6 إلكترونات. ما عددها الكتلي؟

1. A6
2. B0
3. C12
4. D18

What is a horizontal row of the periodic table called?

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

What is a beta particle?

1. AA neutron that leaves the nucleus
2. BA helium nucleus with two protons and two neutrons
3. CA wave of visible light
4. DA high-energy electron released from a nucleus

How does dissolving salt in water affect the water's boiling point?

1. AIt raises the boiling point slightly
2. BIt makes the water boil at room temperature
3. CIt has no effect on the boiling point
4. DIt lowers the boiling point slightly

Which measurement has three significant figures?

1. A5,0006
2. B0,0056
3. C56
4. D0,00560

في ذرة الكلور-37 17 بروتونًا. كم نيوترونًا فيها؟

1. A54
2. B17
3. C20
4. D37

How many grams of NaCl are in 250 mL of 0,9% (w/v) normal saline?

1. A9 g
2. B2,25 g
3. C0,9 g
4. D22,5 g

A compound is a gas at room temperature, does not conduct electricity in any state, and is made of two nonmetals. What kind of substance is it most likely?

1. AAn ionic compound (a lattice of ions)
2. BA simple molecular (covalent) substance
3. CA giant covalent network solid
4. DA metal with delocalised electrons