OpenSciEd Lesson 1-2 Review for Quiz

What state of matter does this picture represent?

• Solid
• Liquid
• Gas

What state of matter does this picture represent?

• Solid
• Liquid
• Gas

What state of matter does this picture represent?

• Solid
• Liquid
• Gas

Define matter.

• Matter is anything that has mass.
• Matter is anything that has volume
• Matter is anything that has mass and takes up space.
• Matter is anything that moves.

What did the gas bubbles observed in the bath bomb experiments indicate?

• a) That a chemical reaction was occurring
• b) That the water temperature was decreasing
• c) That the bath bomb was breaking into pieces
• d) That the bath bomb was freezing

Why do we compare homemade bath bombs to store-bought bath bombs?

• a) To observe similarities and differences in
• b) To see which one smells better
• c) To determine which is easier to make
• d) To check if they have the same color

Why do students record the mass of the whole system before and after the reaction?

• a) To see how much water the bath bombs absorbed
• b) To determine if new matter was added or gas was formed
• c) To ensure the bottle cap is tightly on
• d) To compare the weight of the dry and wet bath bombs

What does hearing a hiss when opening the bottle cap indicate?

• a) The bottle cap being too tight
• b) The bath bombs reacting again
• c) Water leaking from the bottle
• d) Gas escaping from the system

What key idea explains why the mass decreased when the bottle cap was opened?

• a) Gas is matter and has mass, so when it escapes, mass decreases.
• b) The water evaporated inside the bottle.
• c) Bubbles dissolved into the water, causing less mass.
• d) The bath bombs absorbed more water, decreasing mass.

What is a conclusion from crushing the dry bath bomb in a closed bag?

• a) The bag remained unchanged, indicating no gas presence.
• b) The bag inflated quickly, showing the gas came from the bath bomb alone.
• c) The bag did not inflate, indicating the gas was not from the dry bath bomb alone.
• d) The bag burst open due to the trapped gas.