What are elements?
What are compounds?
What are mixtures and solutions?
How can substances be described?
How do substances interact?
100
A chart that classifies elements by their properties
What is a periodic table?
100
Two or more atoms joined together
What is a molecule?
100
two or more substances that are mixed together but can be separated out because their atoms are not combined.
What is a mixture?
100
characteristic of an object that you can observe with your senses
What is a physical property?
100
a property that describes how the atoms of a substance react with atoms of other substances
What is a chemical property?
200
Similar elements are found __________________.
What is a column?
200
a substance made up of atoms of more than one element joined together in a molecule
What is a compound?
200
a mixture in which substances break up into their most basic particles, which are too small to be seen, and spread evenly though another substance.
What is a solution?
200
a change in one or more physical properties
What is a physical change?
200
a change that produces new substances with new properties
What is chemical change?
300
Three parts of an atom
What is a proton, neutron, and electron?
300
In NH2, the 2 stands for _________
What is 2 atoms of hydrogen
300
ex: trail mix
What is a mixture?
300
explain the differences in physical properties of an apple and an orange.
What is smooth vs. bumpy, green vs. orange, smooth inside vs. bumpy inside, smaller vs. bigger
300
a substance that can be combined with baking soda to produce carbon dioxide is ____________.
What is vinegar?
400
If an atom has 14 protons, it has ________ electrons.
What is 14?
400
An example of a new material used for the medical field
What is bone cement?
400
ex: soda water
What is a solution?
400
which one is not a physical property: reaction with acids, hardness, texture, elasticity, mass, reaction to a magnet, odor, melting point.
What is reaction with acids?
400
Ice turning to water...a chemical change or physical change?
What is a physical change?
500
How you separate a compound or mixture into its elements
What is heat, light, or electricity?
500
Compounds are different than elements by _____________.
What is an element is made from only one kind of atom; compound is formed from atoms of two or more elements.
500
mixture or solution? salt and water
What is solution?
500
peanuts changing to peanut butter..what property is being changed? hardness, mass, or texture?
What is texture?
500
burning and rusting are similar because....
What is they both are chemical changes, and they are both substances that combine with oxygen
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