Last Statement- 0-14 You Start- What alters the form or appearance of matter, but does not turn any substance in the matter into a different substance. I have- Physical Change Who has- This is the total energy of the motion of all of the particles in an object. Usually you experience this when you describe matter as feeling hot or cold. I have- Thermal Energy Who has- This occurs when a substance transforms into another substance I have- Chemical Change Who has- The statue of liberty is an example of what type of Chemical Change I have- Oxidation: the combination of a substance with oxygen Who has- The fact that matter is not created or destroyed in any chemical or physical change I have- Law of conservation of mass Who has- The measure of how hot or cold something is I have- temperature Who has- the substances that undergo chemical change in a chemical reaction I have- Reactants Who has- A type of reaction that needs more energy to break the bonds of its reactants? The energy needed is absorbed for the surrounding matter. The surrounding matter becomes cooler. I have- Endothermic Reaction Who has- The new substances that are formed after a chemical reaction I have- Products Who has- The direction in which heat energy travels in an endothermic reaction I have- Heat is absorbed into reacting matter Who has- A chemical reaction that occurs inside a sealed, airtight container I have- Closed System Who has- How are Endothermic and Exothermic Reaction the same I have- There is a change in energy in both reactions Who has- A fish tank is an example of this, and matter can enter from or escape to the surroundings I have- Open System Who has- A reaction in which energy is released as products form. The Energy released is commonly heat. I have- Exothermic Reaction Who has- Which system would be used to demonstrate the conservation of mass I have- A closed system is better to demonstrate the conservation of mass, because matter cannot enter or leave. Who has- A compound that tastes sour and is commonly found in fruits I have- Acids Who has- How do acids react with carbonates I have- One product of the reaction is the gas Carbon Dioxide Who has- How do bases feel when held in your hands I have- Slippery Who has- How do acids react with most metals I have- Corrosion: the metal is “worn away” during the reaction. Who has- Melons, cocoa beans and almonds all tend to taste… I have- Bitter Who has- Bitter taste is a common characteristic of what substance I have- Bases Who has- When Blue Litmus paper is dipped in an acid the indicator paper will turn this color I have- Red Who has- A substance that is good for washing metals, because of its basic properties I have- Soap Who has- A substance found in your body that aids breaking down food I have- Stomach Acid Who has- What would you infer about a substance that did not change litmus paper red or blue I have- The substance is not an acid or a base Who has- A specific substance that is not an acid of a base, we also drink this. I have- Water Who has- Pure water is given the value of seven on what scale I have- pH Scale Who has- The purpose of the pH scale I have- To determine the strength of an acid or a base. Who has- 7 on the pH scale is said to be what I have- Neutral Who has the value of a strong base I have- 14 Who has- the value of a weak acid I have- 6 Who has- the reaction between an acid and a base I have- Neutralization Who has- the range of the pH scale