Question

practice problems: 1. determine if the following diagrams represent an element, compound or mixture. determine if the following diagrams represent a solid, liquid or gas. element, compound or mixture solid, liquid, or gas

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. Solids have particles close - packed and in fixed positions, liquids have particles close but able to move past each other, and gases have particles far apart and moving freely.

Step2: Analyze first diagram

There are identical molecules (two - atom units), so it's a compound. Particles are moving freely, so it's a gas.

Step3: Analyze second diagram

There are two different types of single atoms not bonded together, so it's a mixture. Particles are far apart and moving, so it's a gas.

Step4: Analyze third diagram

There are identical molecules (two - atom units) closely packed in a regular pattern, so it's a compound and a solid.

Step5: Analyze fourth diagram

There are identical atoms closely packed in a regular pattern, so it's an element and a solid.

Step6: Analyze fifth diagram

There are identical molecules (two - atom units) moving freely, so it's a compound and a gas.

Answer:

Diagram	Element, compound or mixture	Solid, liquid, or gas
2	Mixture	Gas
3	Compound	Solid
4	Element	Solid
5	Compound	Gas