Chemical Reactions
What is a chemical reaction?
A reaction where a substance is broken apart or bonded together.
Water melting is a physical or chemical change?
Physical
If something changes color, a chemical reaction has happened. True or False
True
Every chemical reaction consists of 2 parts. True or False
True
Does temperature affect a chemical reaction?
Yes, it speed it up
Does a chemical reaction create something new?
Yes
When you burn wood, would that be a physical or chemical change?
Chemical
There are 4 pieces of evidence to watch out for if a chemical change has happened. True or false
False
Name the 2 parts of a chemical reaction.
Reactants and products
A higher concentration = a weaker chemical reaction. True or False
False
Give me 2 examples of a chemical reaction.
Answers may vary: Cooking food, digesting food, burning something, etc.
Your stomach digesting food is a physical or chemical change?
Chemical
List all 5 things to watch out for in a chemical reaction.
Color change, precipitate forms, gas formed, temperature change and change in smell.
What are reactants?
What you start off with in a chemical reaction.
In a gas stove, if you increase the concentration of gas, what happens to the flame?
It grows bigger
What are products?
What you produce in a chemical reaction.