Chemistry
A particle of two or more elements chemically combined.
What is a molecule?
A combination of two or more particles that are not chemically combined.
What is a mixture?
Fog is not a compound, but it is this.
It is a colloid of water and air.
The study of matter, motion, and forces.
What is physics?
_________can be used to separate iron objects from a mixture.
What are magnets?
The smallest unit in which an element can be divided and still maintain its properties.
What is an atom?
A combination of particles in which the particles are not uniformly distributed.
What is a heterogenous mixture?
A mixture in which the particles can be seen and will eventually settle. It blocks light.
What is a suspension?
The study of atoms, elements, compounds, and mixtures.
What is chemistry?
If the length of a wall is 34.5 ft, what is its length in centimeters (1 in. = 2.54 cm) ?
(34.5 ft/1) x (12 in./1 ft.) x (2.54 cm/1 in.) = 1051.56 cm
Two or more elements chemically combined.
What is a compound?
The process used to separate salt from water.
What is distillation?
The particles in this mixture can only be seen with the use of an electron microscope.
What is a colloid?
A building is 174 meters tall, which is equal to this in feet. (1 m=3.28 ft.)
What is 570.72 feet?
Why do we classify matter?
To help us understand creation.
Anything that has mass and takes up space.
What is matter?
The process used to separate sand and water. It was also used during gold mining.
What is filtration?
This effect can only be found in colloids.
What is the Tyndall effect?
An example of a compound that is also a pure substance.
What is water?
They are both pure substances. They are chemically combined and are the same throughout the substance.
The study of atoms and molecules, and how they interact.
What is chemistry/ What chemists want to learn.
A mixture in which the elements are not chemically combined, but are evenly distributed and uniform.
What is a homogenous mixture?
A colloid can be distinguished from a homogenous mixture through this.
What is indirect evidence?
Development of medicines, machinery, rapid communication devices, faster transportation, and space exploration.
Describe the separation process the miners used during the California gold rush.
Miners took metal pans and washed the mixture of river sediments. The smooth metal pans had slightly angled sides and as the miners swirled the water, the lighter particles washed over the sides, leaving the heavier particles, including the gold pieces, in the bottom. After the heavy pieces dried, miners used a magnet to remove some of the iron-rich sand and then picked out the gold from what was left in the pan.