chemistry exam

What are scientific models and why are they important?

• Scientific models are useless and have no practical application.
• Scientific models are only used for entertainment purposes.
• Scientific models are too complex and difficult to understand.
• Scientific models are simplified representations of real phenomena used to understand, explain, and make predictions about the natural world. They are important because they help scientists visualize complex concepts, test hypotheses, and communicate their findings to others.

Name the four states of matter:

• solid, liquid, gas, and plasma
• hard, soft, airy, and electric
• ice, water, air, and fire
• solid, liquid, gas, and energy

Which is the most abundant state of matter in the universe?

• Gas
• Solid
• Plasma
• Liquid

Which is the characteristic of each state of matter?

• Red, blue, green
• Hot, warm, cold
• S: DV, DS L: DV, IND S G: INV, INS

• Soft, hard, smooth

What is a change of state?

• A change of temperature
• A change of color
• Transformation of a substance from one physical form to another
• A change of location

When water boils, the kinetic energy of the particles

When water boils, the organization

When water boils, the distance between the molecules

When water freezes, the kinetic energy of the particles

When water freezes, the organization