Properties
What is a property?
What is a characteristic of a substance that does not change?
TRUE OR FALSE: A substance that undergoes a physical change, like melting, is still the same substance.
What is true?
Gases, liquids, & solids are all _____________.
What is matter?
In Lesson 1, we dropped a bath bomb in water. What did we notice happening to the bath bomb?
What is fizzing? Gas bubbles? Water changed color? BB got smaller as time passed?
In Lesson 4, we mixed different combinations with water. Which combination created gas bubbles?
What is citric acid, baking soda, & water?
Properties can be used to _________ a substance.
What is identify?
Is a change of state, such as boiling, an example of a physical or chemical change?
What is a physical change?
Matter has _______ & takes up __________.
What is matter & space?
In Lesson 2, we measured the mass before & after mixing the BB pieces in the water bottle. What happened during our investigation?
What is the bottle inflated and gas was produced?
What is lemonade, baking soda, & water?
How can we identify an unknown substance?
What is testing properties of that unknown substance?
TRUE OR FALSE: Dissolving, bending, crushing, breaking, and chopping are all examples of physical changes.
What is true?
All matter is made of _________.
What are particles?
In Lesson 3, we talked about Solubility. What is solubility?
What is when a substance is able to dissolve in a liquid?
What is lemonade mix has citric acid in it as an ingredient?
What is a physical property?
What is a property that can only be observed without changing the identity of the substance?
Is combining vinegar and baking soda a physical or chemical change?
What is chemical change?
Does the mass change in an open system? Why or why not?
Yes because the system allows matter to go in or out.
In Lesson 3, we mixed the individual substances with water. What does it mean when a substance turned a murky or cloudy color?
What is that substance is partially soluble?
Is the gas a new substance or coming from something already there? How do you know?
What is the gas is a new substance. The baking soda & citric acid are solids at room temperature. Water is a liquid at room temperature, but the three make a gas when mixed.
What is a chemical property?
What is a property that can only be observed by changing the identity of the substance?
Is dry ice sublimating into carbon dioxide vapor a physical or chemical change?
What is a physical change?
In Lesson 2, why didn't the mass change before & after mixing during our investigation?
What is the system was a closed system?
In Lesson 5, what properties did we test to try to figure out what gas(es) were coming from the bath bomb?
What is flammability & density?
In Lesson 5, we narrowed down the options on what is being released from the bath bomb. What are those gas(es)?
What is nitrogen, carbon dioxide, & argon?