here are four sketches of substances. each sketch is drawn as if a sample of the substance were seen. decide…

here are four sketches of substances. each sketch is drawn as if a sample of the substance were seen. 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
Answer
Explanation:
Step1: Recall definitions
An element has only one - type of atom, a compound has different types of atoms chemically bonded, and a mixture has different substances not chemically bonded.
Step2: Analyze Substance X
Substance X has only one - type of di - atomic molecule. Since all molecules are of the same kind, it is an element.
Step3: Analyze Substance Y
Substance Y has identical molecules, each containing two different types of atoms chemically bonded. So it is a compound.
Step4: Analyze Substance Z
Substance Z is similar to Substance Y. It has identical molecules with two different types of atoms chemically bonded, so it is a compound.
Step5: Analyze Substance T
Substance T has two different types of di - atomic molecules that are not chemically bonded to each other. So it is a mixture.
Answer:
Substance X: element Substance Y: compound Substance Z: compound Substance T: mixture