Matter Chemical Change

Vocabulary

100

The smallest division of matter that maintains its properties.

Atom

200

The three components of an atom.

Proton, Neutron, Electron

300

Type of change where a new substance is created.

What is a CHEMICAL CHANGE?

400

A type of change where the substance stays the same, but size and shape may change.

What is a PHYSICAL CHANGE?

500

The electrons specifically in an atoms "outer most" shell

Valence Electrons

Physical Change/Chemical Change

100

Is a melted popsicle an example of a physical or chemical change?

Physical. You can melt and refreeze a popsicle and it will still be a popsicle.

200

Is Alka-Seltzer and water an example of a physical or change?

Chemical Change. When you mix Alka-Seltzer and water, bubbles form, which indicates a chemical change as taken place.

300

A Metal Rusting after being left outside. Physical or Chemical Change?

Chemical change. The rust is a new substance as we see a change in colour.

400

Lemonade crystals being dissolved in water. Physical or Chemical?

Physical. The sugar and water are still both present, just mixed together.

500

Bonus Challenge: Is the water cycle an example of a physical or chemical change?

What is YES, it is a physical change, because water changes from a liquid/solid when it precipitates, to a gas when it evaporates, then forms back into a liquid when it condensates. Then the process repeats again with the same substance, WATER!

Chemical Families

100

The family in the first group that is extremely reactive with water?

The Alkali Metals

200

The Alkaline Earth metals are slightly less reactive than the Alkali Metals and are found in what group?

Group 2

300

This family is in group 17 and needs one electron to complete its outer shell?

The Halogens

400

The noble gasses are famously UNREACTIVE because...

They already have a full valence electron shell.

500

The families have similar properties because they all have _____________ in common

Same number of valence (outside) electrons 

Build that ATOM!

100

He

P:2

N:2

e:2

200

Lithium

P: 3

N:4

e:3

300

Carbon

P:6

N:6

e:6

400

Fluorine

P:9

N:10

e:9

500

Silicon

P:14

N:14

e:14

Mixed Bag

100

Protons have what kind of charge?

Positive

200

What does a BOHR model of an atom show?

Electrons and the shells they occupy

300

Which two atomic components contribute to atomic mass?

Proton and Neutron

400

Describe the state at room temperature and the luster of metals.

Solid and Shiny

500

What do the terms malleability and ductility describe?

The ability for substances to be bent and shaped.