Compound

The video explains that compounds are made of atoms held together by strong chemical bonds in fixed ratios. Water is highlighted as a compound with a consistent composition of two hydrogen atoms for every oxygen atom. It is noted that compounds have different properties from their constituent elements, exemplified by sugar, which does not resemble the hydrogen, carbon, and oxygen atoms it comprises.

What holds atoms together in a compound?

• Gravitational pull

• Weak physical forces

• Magnetic attraction

• Strong chemical bonds

In a water molecule, what is the ratio of hydrogen atoms to oxygen atoms?

• 3:1

• 1:1

• 2:1

• 1:2

How do the properties of compounds generally compare to their constituent elements?

• They are unpredictable

• They are very different

• They are slightly different

• They are identical

Which of the following is an example of a compound with properties different from its elements?

• Oxygen

• Hydrogen

• Sugar

• Carbon

What elements make up sugar?

• Hydrogen, carbon, and oxygen

• Nitrogen, carbon, and oxygen

• Hydrogen, nitrogen, and sulfur

• Carbon, oxygen, and sulfur