Question

decide whether each sketch shows a sample of an element, a compound, or a mixture. substance x element compound mixture substance y element compound mixture substance z element compound mixture substance t element compound mixture

Explanation:

Step1: Recall definitions

An element has only one - type of atom, a compound has two or more different types of atoms chemically bonded, and a mixture has two or more different substances not chemically bonded.

Step2: Analyze Substance X

There are two types of di - atomic molecules (blue - blue and red - blue), so it is a mixture.

Step3: Analyze Substance Y

All the molecules are identical (red - blue), so it is a compound.

Step4: Analyze Substance Z

All the atoms are of the same type (red), so it is an element.

Step5: Analyze Substance T

All the molecules are identical (red - blue), so it is a compound.

Answer:

Substance X: mixture
Substance Y: compound
Substance Z: element
Substance T: compound