What are those????
What is matter?
Anything that has mass and takes up space
Volume
Volume= (length) x (width) x height
Define density
What is the difference between physical and chemical properties?
physical property- can be observed without changing the identity of a substance
chemical property- observed by attempting to change the identity of a substance
How can elements be classified?
Differences in physical and chemical properties
What are the different types of matter?
Solids, Liquids, & Gases
Density
Density= mass/volume
What are physical properties of matter?
A characteristic of a substance that can be observed and measured without changing the identity of the substance.
What is a physical change of matter?
A change that affects more than one or more physical properties of a substance.
How are the elements on the periodic table organized?
Metals, Non-metals, Metalloids
What is Mass?
The amount of matter in an object
V= (25cm)(18cm)(10cm)
v= 4,500 cm3
Give an example of a physical property
Color, shape, size, texture
flexibility can be shaped easilyGive an example of a physical change
Stretching a rubber band
Dissolving sugar or salt in water
Cutting your hair
Melting butter
Bending a paper clip
crushing an aluminum can
How can compounds be classified?
By their PH, As organic or Inorganic, By their role in the body
What is weight?
A measure of the gravitational force on an object.
0.6g/cm3=49.8g/v
83cm3
Define Chemical property
A substances ability to change into a new substance with different properties
How do higher temperatures influence a chemical change?
Raising temperature cause the particles in matter to move more quickly. The increased amount of motion causes the particles to bump into each other often and increase the rate of chemical reactions.
What are the two ways a mixture can be classified?
What is the difference between weight and mass?
Mass is the amount of matter in an object and weight is the pull of gravity on an object.
Give an example of a chemical change
or Chemical properties
Iron rusting
flammability and reactivity
How can you tell a chemical change has happened?
Production of an odor
Production of a gas
Formation of a Precipitate
Changes in Energy
Change in Color
Define a homogeneous mixture
Define a heterogenous mixture
Homogeneous mixture- a mixture whose composition is uniform (or the same) throughout the mixture.
Heterogeneous- a mixture in which the composition is not uniform (the same) throughout the mixture.