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Classifying Matter..

Physical Science Unit/Fernan Grade 5

The number of elements... over 100
The particles of an atom that are found outside the nucleus... electrons
2 or more atoms joined together...the smallest unit of many substances... molecule
a new substance made up of atoms of different elements joined together to form a molecule compound
a compound made of iron atoms and oxygen atoms iron oxide or rust
a compound made of sodium and chlorine salt
a kind of mixture in which substances break up into their most basic particles that are too small to be seen and spread evenly through another substance solution
lemonade is an example of a special kind of mixture... solution
a physical property which describes how much a substance will stretch... elasticity
this kind of property describes how substances can be observed with the senses (color, shape, texture, odor, magnetism, melting point, state of matter, etc...) physical property
one of the new substances that forms after wood combines with oxygen (when wood burns) ash
this kind of property describes how a substance reacts with other substances, what a substance acts like, what happens when a substance changes. chemical property
this kind of property helps you know the difference between the element GOLD and the compound PYRITE (iron sulfide) chemical property
a lettuce, tomato, and cucumber salad is an example of a... mixture
2 or more substances mixed together...but can be separated... because their atoms are not combined mixture
a chart that classifies elements by their properties periodic table of elements
cake baking is an example of... chemical change
apples turning brown in the air is an example of... chemical change
tomato ripening is an example of... chemical change
H2O in the solid state of matter ice
H2O in the liquid state of matter a puddle of liquid water
H2O is the symbol for a molecule of... water: 2 atoms of hydrogen (H) and 1 atom of oxygen (O)
this liquid is combined with baking soda to produce carbon dioxide, water, and basic salt vinegar
Elements are arranged by similar properties or “groups.” The “groups” on the periodic table are found in... columns (up ↑ and down ↓ )
the particle in an atom that has a (+) positive electrical charge proton
the particle in an atom that has a (-) negative electrical charge electron
an atom of an element has the same number of these particles... protons and electrons
this new material made of a mixture of calcium and phosphate “bone cement”
temperature a substance will melt or freeze... melting point
has mass and takes up space... matter
iron filings and powdered sulfur... a mixture
a chemical property of wood... wood can burn in the presence of oxygen
Created by: fernanm