General Chemistry 1_1st Quarter (Diagnostic Exam)

A jewelry shop claims a bracelet is pure gold. Which property can confirm this?

• Color

• Shape

• Density

• Size

You spill colored ink on paper. How can you separate the colors?

• Filtration

• Decantation

• Distillation

• Chromatography

The best way to get pure water from seawater is:

• Filtration

• Chromatography

• Distillation

• Freezing

All matter is made of:

• Atoms

• Cells

• Liquids

• Energy

Isotopes of an element have different numbers of:

• Protons

• Neutrons

• Electrons

• Mass numbers

Which real-life process uses isotopes?

• Making jewelry

• Food coloring

• Medical scans

• Cleaning floors

When buying shampoo, you compare:

• Color only

• Brand name

• Ingredients

• Ads

A high-quality toothpaste is chosen for:

• Flavor only

• Price only

• Brand popularity

• Safety and effectiveness

Which shows how atoms are arranged in a molecule?

• Mass number

• Empirical formula

• Structural model

• Chemical symbol

The chemical formula for table salt is:

• H2O

• CO2

• NaCl

• C6H12O6