Vocabulary
Anything that has mass (weight) and takes up space.
What is Matter?
Is a melted Popsicle an example of a physical change?
What is YES? You can melt and refreeze a Popsicle and it will still be a Popsicle.
Is rust an example of a chemical change?
What is YES? You cannot change rust back into the metal is was before; therefore, it is a chemical change.
In the lab, you mix vinegar and baking soda together and bubbles immediately start to form.
What is a gas is being produced?
In a chemical change a new substance is always formed.
What is YES? A new substance is ALWAYS Formed in a chemical change. You can never get that substance to the way it was before.
These are the characteristics of an object and you use your senses to identify them.
What are PHYSICAL PROPERTIES?
Is Alka-Seltzer and water an example of a physical change?
What is NO? When you mix Alka-Seltzer and water, bubbles form, which indicates a chemical change as taken place.
TRUE OR FALSE: Painting a house red is an example of a chemical change.
What is false? Paining is evidence of a physical change.
In the lab, you mix Sodium Bicarbonate and Acetic Acid together in a beaker and the breaker turned cold.
What is an unexpected temperature change?
Name the 3 types of matter.
What are SOLID, LIQUID, GAS?
Type of change where a new substance is created.
What is a CHEMICAL CHANGE?
Name a food that is an example of a physical change.
What is a salad, trail mix, Popsicle, shredded cheese, etc.?
Name a food that is an example of a chemical change and explain why.
What is a cake, because you cannot turn a cake back into the eggs, flour, sugar, etc. that you mixed together?
In the lab, you mix Calcium Carbonate with Sodium Chloride and a powdery substance forms and settles to the bottom.
What is a precipitate is formed?
Name 2 physical properties of water.
What is liquid, wet, odorless, etc.?
A type of change where the substance stays the same, but size and shape may change.
What is a PHYSICAL CHANGE?
Explain how water could be an example of a physical change.
What is ice? Freezing and melting water/ice is an example of a physical change?
True or False. Turning peanuts to peanut butter is an chemical change.
What is FALSE? To make peanut butter, you grind up roasted peanuts, so nothing new is being created.
In the lab, you mix clear Hydrochloric Acid liquid and blue Copper Sulfate liquid and the substance turns light green.
What is an unexpected color change?
Name 2 physical properties of ice.
What are cold, hard, solid, wet, etc.?
Two liquids react in a solution, forming a new substance made of solid particles.
What is a precipitate
CHALLENGE (not a quiz question): Explain how the water cycle an example of a physical change.
What is YES, it is a physical change, because water changes from a liquid/solid when it precipitates, to a gas when it evaporates, then forms back into a liquid when it condensates. Then the process repeats again with the same substance, WATER!
Name the four (4) evidences of a chemical change.
What are unexpected color change, unexpected temperature change, a production of a gas, and a precipitate forms?
CHALLENGE Explain how a rocket launch is an example of a chemical change.
What is a gas is produced and an unexpected temperature change?
Explain how iron fillings and sand can be separated using physical properties.
What is iron is magnetic and sand is not, so you can use a magnetic wand to separate the two substances?