Lembar kerja Kimia untuk ujian masuk keperawatan dengan jawaban

Apa yang dilakukan katalis?

1. AMemperlambat reaksi dan habis terpakai
2. BMempercepat reaksi tanpa habis terpakai
3. CMengubah produk suatu reaksi
4. DMenyediakan pereaksi untuk suatu reaksi

Which property is typical of nonmetals?

1. AThey easily lose electrons to form positive ions
2. BThey are shiny and easily bent into wires
3. CThey are poor conductors of heat and electricity
4. DThey are all solids at room temperature

Which state of matter has a fixed volume but takes the shape of its container?

1. ALiquid
2. BSolid
3. CPlasma
4. DGas

A reaction has a theoretical yield of 20 g, but only 15 g of product is collected. What is the percent yield?

1. A75%
2. B25%
3. C133%
4. D5%

On an energy diagram, the products are at a lower energy than the reactants. What kind of reaction is shown?

1. AReversible only
2. BNuclear
3. CEndothermic
4. DExothermic

Which element has chemical properties most similar to calcium?

1. APotassium
2. BCarbon
3. CScandium
4. DMagnesium

Persamaan mana yang setara dengan benar?

1. ANa + Cl → NaCl₂
2. B2Na + Cl₂ → 2NaCl
3. CNa + Cl₂ → NaCl
4. D2Na + Cl₂ → NaCl₂

Which approach best reduces a health worker's exposure to ionising radiation?

1. ARely only on wearing gloves
2. BWork faster without any shielding
3. CLimit the time near the source, increase the distance and use shielding
4. DStand closer to the source so the job is finished sooner and exposure is shorter