Compuesto

The video explains that elements are made of atoms held together by strong chemical bonds. Compounds, like water, consist of elements in fixed proportions, such as two hydrogen atoms for every oxygen atom. Compounds have distinct properties that differ from their constituent elements. For instance, sugar is composed of hydrogen, carbon, and oxygen, yet it has unique characteristics unlike its individual elements.

What holds the atoms together in a compound?

• Electrostatic repulsion

• Magnetic attraction

• Strong chemical bonds

• Weak gravitational forces

How many hydrogen atoms are there in a water molecule?

• Two

• Four

• One

• Three

Which of the following is a characteristic of compounds?

• They have the same properties as their elements

• They cannot be broken down into simpler substances

• They are made of a single element

• They have different properties from their constituent elements

What elements make up sugar?

• Carbon, hydrogen, and oxygen

• Hydrogen, nitrogen, and oxygen

• Carbon, nitrogen, and sulfur

• Oxygen, nitrogen, and sulfur

Which statement is true about the properties of compounds?

• They are a mixture of the properties of their elements

• They are identical to the properties of their elements

• They are unpredictable and random

• They are completely different from the properties of their elements