Matter with a definite composition and characteristic properties.
What is a substance?
200
------> This symbol means this
What is yields?
200
These metals are very reactive
What is alkaline earth metals
200
Atoms are made up of three different particles
What is protons, neutrons, and electrons
200
A characteristic of a substance that describes its ability to change into a different substance
What is chemical property
300
Matter made of two or more substances but keeps their own properties.
What is a mixture?
300
Big numbers in front of the chemical formula that tells you how many molecules there are of that substance.
What are coefficients?
300
This is group reacts by losing 1 electron
What is Alkali metals
300
It tells you the number of protons in the atom and gives the atom it's identity
What is atomic number
300
Any change that alters the form or appearance of matter but does not change into a new subtance
What is physical change
400
These kinds of mixtures are uneven and have variation.
What are heterogeneous mixtures?
400
The products are listed on this side
What is the right side?
400
It can be shiny or dull, some are semi-conductors, is solid at room temperature, malleable and ductile, and it's a conductor of heat and electricity better than nonmetals but they aren't as good as metals.
What are metalloids?
400
Any atom in the universe that has 6 atoms
What is atomic identity
400
A change in matter that transforms the matter into one or more new substances
What is chemical change
500
These mixtures are evenly/thoroughly mixed.
What are homogeneous mixtures?
500
Tiny numbers listed in the lower right by any element that tells you how many atoms there are of the element.
What are subscripts?
500
These elements react by losing two electrons
What is alkaline earth metals
500
It is central and positively charged
What is nucleus
500
Characteristic of a substance that can be observed without changing it into a different substance