Chemia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

Between which kinds of elements do ionic bonds usually form?

1. ATwo identical metals
2. BTwo noble gases
3. CA metal and a nonmetal
4. DTwo nonmetals

What is a single covalent bond?

1. AOne electron transferred from one atom to another
2. BThe attraction between two oppositely charged ions
3. CTwo pairs of electrons shared between two atoms
4. DOne pair of electrons shared between two atoms

What is an alpha particle made of?

1. AA single high-energy electron
2. BPure electromagnetic energy
3. C2 protons and 2 neutrons
4. D1 proton and 1 electron

How does an antacid tablet relieve heartburn caused by excess stomach acid?

1. AIt coats the stomach and stops all acid production
2. BIt turns the acid into a gas that is absorbed
3. CA weak base in it neutralises some of the acid
4. DAn acid in it lowers the stomach pH further

What charge do group 16 elements such as oxygen and sulfur usually have as ions?

1. A1−
2. B2−
3. C2+
4. D6+

Which of these is a colloid?

1. APure water
2. BMilk
3. CSand in water
4. DSalt water

Which element has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁵?

1. AChlorine
2. BArgon
3. CFluorine
4. DSulfur

Why does a burn from steam at 100 °C usually cause more damage than one from liquid water at 100 °C?

1. ASteam releases a large amount of extra energy as it condenses on the skin
2. BSteam particles are hotter than water particles at the same reading
3. CSteam carries dissolved acid that damages the skin
4. DLiquid water cannot pass any of its heat to the skin