Unit 0
Unit 1
All About Bath Bombs
Chemical Reactions
100
What is the smallest building block of all matter? Hint: it comes from the Greek word, "atomos."
Atoms
100
A combustion (lighting something on fire) is an example of a...
chemical reaction
100
A bathbomb fizzing is an example of which sign of chemical change?
gas is formed
100
What are the substances that combine or break each other apart in the beginning of a chemical reaction?
reactants
200
_________ is the amount of matter or stuff in an object or substance.
mass
200
This image represents the atoms of a substance. Which state of matter is the substance showing?
solid
200
What was the role of cornstarch in the bath bomb?
It was filler/slowed down the reaction rate.
200
What is the resulting new substance after 2 reactants interact in a chemical reaction?
the product
300
________ is anything that has mass and takes up space.
matter
300
True or false: dyeing your hair is an example of a chemical change.
true
300
What state of matter is the bath bomb BEFORE it hits the water?
solid
300
True or false: cutting your hair is a chemical change
false
400
What is a variable that you MEASURE? Hint: you measure this AFTER conducting the experiment.
dependent variable
400
Ms. Sy leaves an iron pipe out on her porch. After 3 days, she noticed rust forming on the pipe. Which sign of chemical change did this example show?
The formation of a new substance
400
What is one sign that a chemical reaction occurred when we added the bath bomb to water?
A gas formed
400
What is the process where the atoms of 2 or more substances rearrange themselves to make a new substance?
chemical reaction
500
______________ is the amount of gravitational force applied to one's mass.
weight
500
Why is freezing liquid water into ice an example of a physical change?
Because the water is still H20/the chemical identity of water did not change.
500
When you add an acid (citric acid) with a base (baking soda), you create a new gas called...?
Carbon dioxide
500
When iron interacts with oxygen, it forms a new substance called rust. What is the scientific name of rust?
Iron oxide