Bath Bomb Unit Study Guide
The ingredients that cause the bath bomb to react with water are...
baking soda and vinegar.
We tested density by...
holding a flame above and below a bottle with gas. If the gas affected the flame above the bottle then it was rising and less dense than air. If the gas affected the flame below the bottle then it was sinking and more dense than air.
We tested flammability by...
holding a flame inside the bottle with the gas and seeing if it increased, went out, or stayed the same.
Density is...
how packed together a substance's particles are. It is calculated by dividing the mass by the volume.
The law of conservation of mass says that the number of atoms in the products...
must equal the number of atoms in the reactants.
Based on properties, we knew that the gas coming from the bath bomb had to be...
nitrogen, argon, or carbon dioxide.
We can identify a substance by observing its...
properties! This is because the properties of a substance are always the same.
Density determines if a substance will...
sink or float (rise or fall).
Flammability is...
the ability of a substance to burn
Solubility is...
the ability to dissolve in water.
When we added heat to water we made a gas. We turned this gas back into a liquid and we found that the properties of this liquid were...
the same as the properties of water, meaning that the liquid was water.
Atoms are...
the smallest particles of matter.
When we crushed the bath bomb in the ziplock bag. We saw that the mass did not change and the bag did not inflate. This proved that...
there aren't gas bubbles trapped inside the bath bomb before it goes in the water. This means that the gas has to be made in the reaction.
Molecules are...
two or more atoms chemically combined. They can be broken down into atoms.
Atoms cannot ever be...
broken down or destroyed.
The law of conservation of mass says that matter...
cannot be created or destroyed.
When the closed system was opened, the mass...
decreased. This happened because gas was released and gas is matter and all matter has mass.
We added the bath bomb to water in a bottle with the cap on. This was a closed system and the mass...
did not change. This proved that the gas made in the reaction came from matter that was already there.
When we added energy from the battery to water we made two gases. We found that the properties of these gases were...
different from the properties of water vapor (they were flammable), meaning that a new substance was made.
The mass at the start of the reaction is...
equal to the mass at the end of the reaction.
We invesitgated the properties of the gas coming from the bath bomb. We found out that the gas was...
inflammable and more dense than air.
In a chemical reaction the...
molecules break down and the atoms recombine.
