10QT-The nature of matter

Which three subatomic particles make up atoms?

• Protons, neutrons, and electrons

• Protons, electrons, and molecules

• Neutrons, electrons, and compounds

• Protons, neutrons, and elements

What is the basic unit of matter?

• Atom

• Molecule

• Compound

• Element

What is the center of an atom called, which contains the protons and neutrons?

• Nucleus

• Electron cloud

• Shell

• Isotope

Why is chlorine, a poisonous gas, safe to consume as part of table salt?

• It is diluted in water

• It is combined with sodium to form a compound with different properties

• It is filtered out before consumption

• It evaporates during cooking

How many protons does a carbon-12 atom have?

• 12

• 14

• 6

• 8

How many electrons does a carbon atom have?

• 12

• 14

• 6

• 8

What kind of chemical bond holds the water molecule together?

• Ionic bond

• Covalent bond

• Van der Waals force

• Metallic bond

What is the difference between covalent and ionic bonds?

• Covalent bonds transfer electrons, ionic bonds share electrons.

• Covalent bonds share electrons, ionic bonds transfer electrons.

• Both covalent and ionic bonds share protons.

• Both covalent and ionic bonds transfer neutrons.

What is the basic unit of matter?

• Atom

• Molecule

• Compound

• Ion

How many electrons can the first shell of an atom contain?

• No more than two

• No more than four

• No more than six

• No more than eight