Mixtures
This method is best for separating magnetic iron filings from non-magnetic particles.
What is a magnet?
This phase of matter has a definite shape and volume.
What is a solid?
This element has atomic number 6 on the periodic table.
what is Carbon?
This group is on the far right of the periodic table and is not reactive.
What are the noble gases?
A scientist needs to identify an unknown substance and can use two properties. They have a choice between testing length and height OR conductivity and magnetism. This choice is the best method of the two offered.
What is testing conductivity and magnetism?
This method is best for separating large solids from small solids.
What is a sieve?
This phase of matter has particles that move very fast and are far apart.
What is a gas?
This element is a noble gas and has two protons.
What is Helium?
These elements are on the top right corner of the periodic table and do not conduct electricity or heat well.
What are nonmetals?
A scientist needs to identify an unknown substance and can use two properties. They have a choice between testing mass and temperature OR density and conductivity. This choice is the best method of the two offered.
This method is best for separating a liquid from a solid.
This phase of matter has a definite volume, but does not have a defined shape.
What is a liquid?
When Magnesium and Potassium are compared to Calcium, this element is the most similar.
Most elements on the periodic table are classified as this.
What are metals?
For identification the two choices are size and color or solubility and density. This is the best choice to identify the unknown.
What is solubility and density?
This method is best for identifying two liquids that form layers in a bottle.
What is density?
These two phases of matter have a definite volume.
What are solids and liquids?
What are atoms?
The three element types Na, S, and Xe represent.
What are a metal, a nonmetal, and a noble gas?
For identification the two choices are temperature and mass or solubility and conductivity. This is the best choice to identify the unknown.
What are solubility and conductivity?
This method is best for obtaining a dissolved solid out of water.
What is evaporation?
The molecules of this state of matter have the weakest attraction to each other.
What is a gas?
This element is most similar to Neon and has 18 protons.
What is Argon?
This is the most reactive, naturally found element on the periodic table.
What is Francium?
For identification the two choices are solubility and size or magnetism and density. This is the best choice to identify the unknown.
What are magnetism and density?