Chemistry Refresh

Which two subatomic particles are found in the nucleus of an atom?

• Neutrons and Protons

• Shells and Electrons

• Electrons and Protons

• Electrons and Neutrons

Which subatomic part of an atom gives it a positive charge?

• Neutron

• Proton

• Electron

• Nucleus

What is the smallest 'building block' of the elements that make up the universe?

• An atom

• An electron

• A proton

• A cell

What is the smallest 'building block' of the elements that make up the universe?

• An atom

• An electron

• A proton

• A cell

What can be inferred from the picture?

• Elements are always made of individual atoms

• Mixtures contain only one type of molecule

• Molecules always make compounds

• Compounds are pure substances

Which unit is used to measure mass in the metric system?

• Pound

• Slug

• Ounce

• Gram

How much volume is in the graduated cylinder?

• 40.3 mL

• 43 mL

• 20 mL

• 100 mL

What is the volume of the two red spheres?

• 4 ml

• 6 ml

• 2 ml

• 8 ml

Boiling point of pure water is... (just write the number)

Two or more elements that combine chemically.

• Molecule

• Mixture

• Compound