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Chemistry Apoligia
Chemistry
Question | Answer |
---|---|
Homonuculear Diatomic molecules | N2 Nitrogen O2 Oxygen Cl2 Chlorine F2 Fluorine Br2 Bromine I2 Iodine At2 astatine H2 Hydrogen |
pure substances | A substance that contains only one element or compound. |
Mixture | A substance that contains defferent compounds and/or elements. |
Heterogeneous mixture | A Mixtrure whith a composition that is different depending on what part of the sample you are observing. |
Homogeneous mixtures | A mixture with a composition that is always the same no matter what part ogf the sample you are observing. |
Chemical change | A change that affects the type of molecules or atoms in a substance. |
Physical change | A change in which the atoms or molecules in a substance stay the same. |
kintetic theory of matter | molecules and atoms are in constant motion, and the higher the temperature, the greater their speed. |