periodic table
elements, molecules and compounds
rate of dissolution
solutions
CHEMICAL AND PHYSICAL CHANGES
100

Representing the number of atoms in an atom's nucleus, this unique whole number identifies the element on the periodic table.




atomic number

100

This substance cannot be broken down into simpler chemical substances by ordinary chemical means and is pure

element

100

This term describes a solution that contains a relatively small amount of solute compared to the large amount of solvent present.

dilution

100

what is the universal solvent

water

100

This type of change alters the size, shape, or state of matter, but does not produce a new substance.

PHYSICAL CHANGE

200

Derived from the Latin word 'natrium', 'Na' is the chemical symbol for this well-known alkali metal.

sodium

200

the number behind a chemical symbol that is small telling how many of that element there are in a formula

subscript

200

For most solid solutes, increasing this environmental factor adds thermal energy, which speeds up molecular movement and increases the rate of dissolution.

What is temperature

200

A solute?

What is the substance that dissolves.

200

This common reddish coating forms on iron when it reacts with oxygen and water over time.

RUST

300

Usually expressed in atomic mass units (amu), this decimal number below the element's symbol represents the weighted average mass of an element's isotopes.




atomic mass

300

A molecule of glucose (C6H12O6) contains this specific number of carbon atoms.

6

300

Crushing a solid solute into a fine powder increases this geometric property, allowing more solvent molecules to collide with the solute simultaneously.

What is surface area

300

The substance into which the solute dissolves.

the solvent

300

Burning a piece of wood turns it into ash and smoke, proving it is this type of change.

CHEMICAL CHANGE

400

Derived from the Latin word 'ferrum', this symbol 'Fe' represents a transition metal vital for hemoglobin function in human blood.




iron

400

Known scientifically as sodium chloride, you probably know this compound better as a essential kitchen seasoning

salt

400

This basic laboratory action introduces kinetic energy to a solution by moving usually a rod in circles, moving saturated solvent away from the solute and significantly increasing the rate of dissolution.

agitation

400

WHEN MORE SOLUTE CAN DISSOLVE?

UNSATURATED

400

The creation of this solid material from two liquids mixing together signals a chemical change.

What is a precipitate

500

what do we call the letters instead of spelling out the name of an element

chemical symbol

500

the name for the number in front that multiplies a chemical formula

coefficient

500

An orange juice product sold frozen in a can is heavily "this," meaning a large amount of its water solvent was removed

concentrated, concentration

500

WHEN NO MORE SOLUTE DISSOLVES

SATURATED

500

DESCRIBE AN EVENT WHERE SEEING BUBBLES MIGHT NOT BE A CHEMICAL CHANGE?

ANSWERS VARY....... WATERFALLS, SOAP BUBBLES ECT.

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