TAKE OUT YOUR FOLDABLE and NOTEBOOK SO I CAN CHECK IT

On BACK: Chapter 9 Study Guide Name Date Period

Notebooks page 78-79 A) candle glued & colored correctly- B) all data from page 79 10 observations of candle calculate change in height & mass changes in candle statement

Describe using words: solute, solvent, dissolve Box 1: SOLUTIONS picture Describe using words: solute, solvent, dissolve

9.1 Water and solutions A solution contains at least two components: the solvent dissolves a solute. The solvent is the part of a mixture that is present in the greatest amount. Which of these is the solvent?

Box 2: PHYSICAL AND CHEMICAL CHANGES Short definition in your own words Physical: Changes the form /appearance Not making a new substance Chemical Changes it into a different substance Forms new substance with different properties

Acids turn indicators RED Bases turn indicators BLUE Box 3: ACIDS AND BASES Acids turn indicators RED Bases turn indicators BLUE

Box 4: How we know when something is Dissolved picture description

When the solute particles are evenly distributed throughout the solvent, we say that the solute has dissolved. On the molecular level, dissolving of a solid (like sugar) occurs when molecules of solvent interact with and separate molecules of solute

Box 5: DILUTE VS CONCENTRATED Solution with more solvent and less solute. Solution with more solute in solvent

picture with explanation Box 6: PHYSICAL CHANGES picture with explanation Give examples (at least 2) Use words “new substance”

picture with explanation Box 7: CHEMICAL CHANGES picture with explanation Give examples (at least 2) Use words “new substance”

I. Difference Between Physical and Chemical Changes: Changes the form /appearance (Shape, State of Matter- etc.) Not making a new substance Chemical Changes it into a different substance Forms new substance with different properties

II. Evidence of a Chemical Reaction: The Four Deadly Warning Signs! Bubbles (gas is made) A solid appears (Precipitate) Color change Change in Temperature KEY: new substances are formed with different properties

Rust = Chemical

Physical

Physical

Physical

Burning = Chemical

Physical

Physical

Frying = Chemical

Physical

Photosynthesis = Chemical

Physical

Physical

Bleaching = Chemical

Physical

Moldy = Chemical

Picture/ examples List 4 properties: “Strong acids have…” Box 8: ACIDS Color pH Ions taste Picture/ examples List 4 properties: “Strong acids have…”

Box 8: ACIDS They taste sour Properties of Acids They taste sour They turn litmus & universal indicator red All acids form hydronium ions (H+) when mixed in water. Acids have a pH range from 0-6 (7 is neutral) Strong acids have more hydronium ions when dissolved in water

Picture/ examples List 4 properties: “Strong bases have…” Box 9: BASES Color pH Ions taste Picture/ examples List 4 properties: “Strong bases have…”

They turn litmus paper blue. Properties of Bases They taste bitter They turn litmus paper blue. All bases form hydroxide ions (OH-) in water. Bases have a pH range from 8-14 (7 is neutral) Strong bases have more hydroxide ions when dissolved in water

Fold your paper: 4 5 6 7 8 9 1 2 3 Inside- draw in the lines Front- draw in the lines

pH 7 = neutral; pH 0-1 = very strong acid pH 14 = very strong base