Properties of Gases
When we squeeze and pull on the air inside a syringe we are demonstrating that gases can be...
Expanded & Compressed
What is one way the periodic table is organized?
Elements are organized by their properties, their atomic numbers and the families they belong to
Is dog food an element, compound or mixture?
Mixture
Which phase of matter has the LEAST amount of energy?
Solids
What is the name of country where Vibranium is mined?
Wakanda
When we compare the weight of the empty balloon vs. an inflated balloon, we are demonstrating that gas has...
Mass
Which element is atomic number 1 on the periodic table?
Hydrogen
Is uranium an element, a compound or a mixture?
Element
When ice melts, is it gaining or losing energy?
Gaining energy.
Liquid molecules have more energy than solids do.
Why can you smell a lit candle from across the room?
The candle wax melts and some of the molecules evaporate. The wax molecules are carried by the ever-moving air molecules in all directions, and some enter your nose.
If a canister is sitting on a hot plate with no cap on it, where is the air pressure higher?
Inside
The inside air is heated, the molecules are moving faster inside than out.
What is the name of the family of elements in row 18 on the periodic table that are known for being extremely stable because they do not bond and do not react with other elements?
Noble Gases
What is a pure substance?
It is a substance that is only made of one type of particle (Example- Water is a pure substance because it is only made of H2O molecules. Gold is also a substance because it is only made up of gold atoms)
When water appears on the outside of a cold cup (condensation), where has the water come from?
The air.
Condensation on your drinking glass occurs when water vapor from the air touches your cold cup, loses heat energy, and changes phases from a gas into a liquid
What does the 2 in H2O mean?
There are 2 hydrogen Atoms in a water molecule
When we pump air into a closed flask and the top pops off, we are demonstrating that gases have...
Volume
Which element has the chemical symbol "Mg"
Magnesium
Is bronze an element, compound or mixture?
Mixture
(Bronze is an alloy made from copper and tin)
What is it called when a solid turns directly into a gas, bypassing the liquid phase?
(Hint: think dry ice)
Sublimation
What elements can be found in a molecule of baking soda (NaHCO3)
Sodium, Hydrogen, Carbon and Oxygen
What are the 2 properties of gases regarding shape and volume?
Gases have no definite shape (take the shape of their container)
Gases have no definite volume (Fill the volume of their container)
Who invented the periodic table of elements?
Dmitri Mendeleev
What is the difference between an element, compound and mixture?
An element is a substance made of one type of atom, a compound is a substance made up of more than one kind of particle (atom or molecule), and a mixture is a mixture of more than one type of substance
What is an example of deposition?
Frost on the windshield of a car in the winter (etc.)
How can you tell an atom's atomic number by looking at it?
You can count how many protons are found in its nucleus