GenChem 1 Review Quiz (1st Quarter)

What property of salt allows it to be separated from seawater by evaporation?

• Solubility

• Magnetism

• Flammability

• Conductivity

Which method is best to separate iron filings from sand?

• Filtration

• Distillation

• Magnetism

• Evaporation

Which statement best describes the particles of matter?

• They are continuous and unbreakable

• They are made of tiny particles with spaces between them

• They cannot move at all

• They are visible under a microscope

When sugar dissolves in water, what happens at the particle level?

• Sugar particles vanish completely

• Sugar particles spread evenly among water molecules

• Water particles become sugar

• Sugar changes to another substance

Which of the following soaps would be considered more cost-effective?

• Soap A: ₱25 for 100 g

• Soap B: ₱40 for 200 g

• Soap C: ₱50 for 180 g

• Soap D: ₱10 for 30 g

Which toothpaste is the better choice if one contains fluoride and the other does not?

• The one with fluoride

• The one without fluoride

• Both are the same

• Neither is safe

Which isotope of Carbon is commonly used in dating fossils?

• Carbon-12

• Carbon-13

• Carbon-14

• Carbon-16

Cobalt-60 is often used in which field?

• Food preservation

• Radiation therapy

• Fertilizers

• Plastic production

Which is the correct chemical formula for water?

• H₂O

• HO₂

• OH

• H₂O₂

A structural formula shows:

• Only the number of atoms

• The arrangement of atoms and bonds

• Just the total mass

• The physical state