Question | Answer |
Diatomic Molecules | when 2 of the same atoms are combined |
Molecular Compound | when non-metals combine |
Ionic Compounds | when metal combines with a non-metal |
5 indications a chemical change has occurred | 1. new substance has appeared
2. gas or heat given off
3. bubbles of gas are formed
4. a solid material, called a precipitate forms in liquid
5. a new scent can be smelled |
What is mass measured in? | grams (g) |
What is volume measured in? | g/cm3 (solid)
g/mL (liquid) |
Density: definition and what is it measured in? | a measure of how much mass is contained in a given unit volume of a substance, g/cm3 (solid) g/mL (liquid) |
Ductility: definition | the ability to be stretched into wires |
Malleability: definition | the ability to be hammered or bent into different shapes |
Viscosity: definition | the degree to which a fluid resists flow |
Solubility: definition | if something will mix |
Hardness: definition | how easily a substance is scratched or dented |
Taste: definition | is it sweet, sour, salty, bitter...etc |
Clarity: definition | amount of light passing through the object |
Luster: definition | how a substance reflects light "shininess" |
Odour: defintion | the smell of it |
Texture: definition | the appearance of the surface of an object |
Colour: definition | the tint in the appearance of something |
State: definition | is the substance a solid, liquid, or gas at room temp. |