Chemistry Flashcards
What is Whmis
Workplace hazardous materials information systems
What is a Physical Change
Doesnt create a new substance
What is Solid to Liquid Change in Matter Called
Fusion
what is liquid to gas
evaporation
What is Gas to Liquid
Condensation
What is gas to solid state of matter change called
Deposition
What is a chemical change
When two or more materials
react and a new material is formed.
Ex. vinegar and baking soda makes carbon
What are physical property’s
property that describes the physical characteristics of a substance
Ex. Melting point, boiling point, malleability, ductility, solubility, conductivity, Colour, lustre, hardness, density, and crystal shape
What are chemical properties
How a substance reacts with another
Ex. Reaction with bases/acids, ability to burn, reaction with water, behaviour in air, reaction with heat.
What is matter
Anything that has mass and volume
What is a pure substance
A Pure substance cannot be broken down
or separated into any other type of
substance.
What is an element
Made up of a single atom
What Is a compound
A compound is made up of two or more atoms that are joined by a chemical bond
What are the types of mixtures
- Heterozygous mixture: mechanical mixture, suspension mixture, and colloids.
- Homozygous mixture
What is a mixture
when two or more substances blend
together.
What is a heterozygous mixture
When a mixture has two or more separate materials.
What is a mechanical mixture
Mechanical Mixture is a mixture in which the
different substances that make up the mixture are clearly visible.
What is a suspension mixture
A Suspension is a cloudy mixture in which tiny particles of one substance are floating within another.
What is a colloid
Colloid is a cloudy mixture in which tiny particles of one substance are held within another.
What is a homozygous mixture
Homogenous Mixture or Solution is when two or more substances mix together to look like one substance
What is Antoine Lavoisier: Conservation of Mass
Law of Conservation of Mass: state that during a chemical reaction, the mass of the starting materials will always equal the mass of the end materials.
What is Joseph Proust: Law of Definite Composition
The Law of Definite Composition: state that when elements form compounds, they will always combine in the same way.
What charge does a electron have
Negative charge
How much mass does a electron have
Almost none
