Matter Basics
Matter is anything that has ___ and ___.
Mass and takes up space
What type of mixture has components evenly distributed at a microscopic level?
Homogeneous mixture
Name two physical properties that can be observed without changing a substance's chemical identity.
mass, volume, shape, size, color, luster, hardness
Chemical properties can only be observed by changing what?
The chemical identity of a substance
What state of matter has a fixed volume and fixed shape?
Solid
What are the two main categories of matter?
Pure substances and mixtures
What type of mixture does not have substances evenly spread out?
Heterogeneous mixture
What is the temperature at which a solid becomes a liquid called?
Melting point
What term describes how easily a substance will catch fire?
Combustibility
Which state of matter has a fixed volume but changes shape based on its container?
liquid
all particles in matter are identical
substance
Are compounds chemically or physically combined?
Chemically combined
What does viscosity measure in a liquid?
A liquid’s resistance to flow
How easily a substance reacts with oxygen
oxidation
What state of matter has no fixed volume or shape?
Gas
two or more substances physically combined
Mixture
Are mixtures chemically or physically combined?
Physically combined
In a solution, what is the substance that dissolves called?
Solute
What happens during a chemical change?
A chemical reaction occurs and a new substance is formed
Name two processes that involve adding energy to change states of matter.
Melting and vaporization or Sublimation
What is the difference between an element and a compound?
Element: simplest form of matter; Compound: two or more elements chemically combined in fixed proportion
How do homogeneous and heterogeneous mixtures differ in appearance?
Homogeneous mixtures look uniform throughout; heterogeneous mixtures do not
How is density calculated? (Provide the formula.)
Density = mass ÷ volume
Give an example of a chemical reaction from the presentation.
Burning charcoal or rusting iron
Name two processes that involve removing energy to change states of matter.
Freezing and condensation or Deposition