Vocab
An observation that includes a number. Uses tools to measure
Quantitative
What is the symbol for element: Beryllium?
Be
The ability for something to dissolve
Solubility
What do you call ONE specific type of atom?
Element
a type of change that is usually reversible
Physical change
What do you call a mixture that is evenly mixed. The substances are equally spread out in the mixture.
Solution
The atomic number for element: Potassium
19
The thing BEING dissolved into another substance
Solute
When two or more atoms combine. Could be the same element, could be different
Molecule
Physical or Chemical Change? -- A change of substance, a new substance is formed
Chemical Change
A method of separation where a liquid is heated to leave behind a solid
Evaporation
What do you call the letters that represent each element name?
Symbol
Water is known to dissolve almost all substances. Therefore it is known as a...
Universal Solvent
The table / tool used to organize all known atoms on Earth
Periodic Table
Bubbles, steam, vapor, odor --> In a chemical change, these are all examples of which signal?
Formation of a GAS
In a chemical change, when a solid forms in a liquid. Ex: rust
Precipitate
Which element has atomic weight 15.999 ?
8
O
Oxygen
In a 300 mL solution of chocolate milk, there are 15 mL of cocoa powder.
What percent of the solution is cocoa powder?
5%
[15 mL / 300 mL] = 0.05 x 100 = 5%
H2O. NH4. NaCl. --> are all examples of which kind of molecule?
Compound Molecules
In a chemical change, a change in energy could happen in sound, light, or _________________
temperature