Color change is always evidence of a chemical reaction.
Rust on a bike is evidence of a chemical reaction.
Use what you read in Chemical Reactions Everywhere to help you complete the table below.
Choose the evidence(s) described present in the chemical reaction listed below.
Chemical Reaction: Fireworks explode
Choose which evidence(s) below is in the chemical reaction.
Choose all that apply (there maybe more than one correct answer)
Chemical Reaction: Apple Turn Brown
Choose which evidence(s) below is in the chemical reaction.
Chemical Reaction: Muffins rise
Choose which evidence below is in the chemical reaction.
Chemical Reaction: Candles burn
Choose which evidence(s) below is in the chemical reaction.
Choose all that apply (there maybe more than one correct answer)
Chemical Reaction: Bread becomes sweet
Choose which evidence below is in the chemical reaction.
Chemical Reaction: Light sticks glow
Choose which evidence below is in the chemical reaction.
Chemical Reaction: Air bags inflate
Choose which evidence below is in the chemical reaction.
Chemical Reaction: Bikes get rusty
Choose which evidence below is in the chemical reaction.
Chemical Reaction: Batteries produce electrical energy
Choose which evidence below is in the chemical reaction.
Chemical Reaction: Bread becomes toast
Choose which evidence(s) below is in the chemical reaction.
Choose all that apply (there maybe more than one correct answer)
Chemical Reaction: Cold packs get cold
Choose which evidence below is in the chemical reaction.
Chemical Reaction: The Statue of Liberty turns green
Choose which evidence below is in the chemical reaction.
Banana Aging:
CFS:
1. Identify if a new substance was formed
2. Explain using one or more pieces of evidence of a chemical reaction
Color change
Taste change
Temperature change
Gas is made
Electricity is made
Light is made
Is this a chemical reaction? Did a new substance form? Explain how you know.
Ice Melting:
CFS:
1. Identify if a new substance was formed
2. Explain using one or more pieces of evidence of a chemical reaction
Color change
Taste change
Temperature change
Gas is made
Electricity is made
Light is made
Is this a chemical reaction? Did a new substance form? Explain how you know.
BAKING SODA AND VINEGAR MIXING:
CFS:
1. Identify if a new substance was formed
2. Explain using one or more pieces of evidence of a chemical reaction
Color change
Taste change
Temperature change
Gas is made
Electricity is made
Light is made
Is this a chemical reaction? Did a new substance form? Explain how you know.
Marshmallows Roasting:
CFS:
1. Identify if a new substance was formed
2. Explain using one or more pieces of evidence of a chemical reaction
Color change
Taste change
Temperature change
Gas is made
Electricity is made
Light is made
Is this a chemical reaction? Did a new substance form? Explain how you know.
PAINT MIXING:
CFS:
1. Identify if a new substance was formed
2. Explain using one or more pieces of evidence of a chemical reaction
Color change
Taste change
Temperature change
Gas is made
Electricity is made
Light is made
Is this a chemical reaction? Did a new substance form? Explain how you know.
Based on this, we can say a chemical reaction did occur during the Mixing Substances Investigation. Because a reaction occurred, we will call it the Hot Yellow Gas Reaction. We know it is a reaction because there was a color change, a temperature change, and gas was produced. We can call it the HYG Reaction for short.
Hot Yellow Gas Reaction. HYG Reaction for short.
Before:
After:
Is this a chemical reaction? Explain how you know.
CFS:
1. Identify whether a new substance has been made
2. Explain which pieces of evidence of chemical reaction were present if there was a chemical reaction
Color change
Taste change
Temperature change
Gas is made
Electricity is made
Light is made
Lionel was cooking dinner and told his friend, Cristiano that the boiling water was a chemical change because the water was changing from a liquid to a gas.
How should Cristiano respond to his friend?
Make sure you explain why you agree or disagree with Lionel.
Is this a chemical reaction? Explain how you know.
CFS:
1. Identify whether a new substance has been made
2. Explain which pieces of evidence of chemical reaction were present if there was a chemical reaction
Color change
Taste change
Temperature change
Gas is made
Electricity is made
Light is made
An ice cube melting is a chemical reaction.
What are the six pieces of evidence that tells us a chemical reaction formed?
