In Science Class . . . Week of 10/10

This week in science, we have been looking at chemical reactions! During a chemical reaction, a mixture of chemicals changes to produce new substances. We did several chemical reactions on Thursday and observed changes. The evidence we saw of a chemical reaction included a color change, a temperature change and/or production of a gas (bubbles). (A common chemical reaction that produces a gas is mixing baking soda and vinegar. )

Key questions:

• What happens in a chemical reaction? (The atoms rearrange to form something new).
• What are common pieces of evidence for chemical reactions? (Change in color, change in temperature, bubbles)

Next week, we'll look at the molecular changes that occur in chemical reactions.