Properties
A property that can be observed by our senses or measured with a tool is an example of a _______ property.
physical
A salad, a glass of pop, and trail mix. What two are mixtures?
Salad, trail mix
When two or more ELEMENTS join together, they form a _______.
compound
How many elements are currently in the Periodic Table?
118 (a little over 100)
Mia, Lila, and Harper's journey represented whose journey in real history?
Columbus
Describe two physical properties of a bowling ball.
Black, round, hard, heavy
A solution is a chemically combined mixture where its parts cannot be separated back into its original properties -- a new substance is created.
Anything that has mass and takes up space is called _______.
matter
Elements in the Periodic Table are grouped the way they are because they have similar _______.
properties
False
How are we able to tell the difference between a physical and chemical change?
In a physical change, we can change the substance back to its original properties. In a chemical change, a new substance is created.
Give an example of a solution.
Lemonade, pop, Kool-aid, anything dissolved in another substance
All elements are made up of atoms. All atoms have three very tiny particles inside of them. They are _____, ______, and ______.
protons, neutrons, and electrons
All elements in the Periodic Table are broken into three basic groups:
1) Artificially made
2) Metals
3) _______
Non-metals
Who is the only undefeated team left in the NFL?
On a beautiful summer night a group of friends decide to have a bonfire. What type of change is this and describe why?
Chemical change ; a new substance is created, ash
Easton is outside and scoops up a pile of leaves, dirt, worms, and rocks. Scientifically, what did he scoop?
A mixture ; all parts can be separated
Carbon, hydrogen, boron, neon, gold, zinc, and 112 others, are all examples of ________.
elements
How do we use the Periodic Table to predict outer shell electrons?
The group # tells you how many outer shell electrons an element has.
The burning skewer was an example of what type of change? Also, why did the skewer stay on the edge of the bowl?
Chemical ; in a chemical reaction the mass never changes. Therefore, the skewer continues to balance even as the change takes place.
A river is flowing during the summer, then ices over during the winter months. Describe what is occurring here in terms of change.
A physical change. Water is still present, but it has changed states.
Describe what scientific technique to separate a mixture besides using your hands.
Filter, magnets, strainer, etc.
Carbon - 6
Hydrogen - 12
Oxygen - 6
Why is the Periodic Table useful?
It keeps us organized, allows us to predict properties, and keeps us safe.
In a Bohr model, we know that boron has 5 outer shell electrons. How many electrons would an element have that bonds perfectly with boron?
3, to make an outer shell of 8