Question

q.3. fill in the blanks using the following word bank.

• compound
• homogeneous
• heterogeneous
• element

Explanation:

Step1: Identify pure substance (element)

The top diagram shows identical single particles, so this is an element, a type of pure substance.

Step2: Identify pure substance (compound)

The second diagram shows identical molecules made of different atoms, so this is a compound, a type of pure substance.

Step3: Identify mixture (homogeneous)

The third diagram shows a uniform mixture of different particles/molecules, so this is a homogeneous mixture.

Step4: Identify mixture (heterogeneous)

The bottom diagram shows a non-uniform mixture of different distinct particles, so this is a heterogeneous mixture.

Answer:

Top blank (pure substance, single particles): element
Second blank (pure substance, bonded atoms): compound
Third blank (uniform mixture): homogeneous
Bottom blank (non-uniform mixture): heterogeneous