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Chemistry 8.1
yearly exam year 8
Question | Answer |
---|---|
What is a mixture? | when two or more substances are not chemically combined. |
What is an element? | A pure substance made from one type of atom. |
What is a compound? | A pure substance made from more than one kind of atom. |
what are the building blocks of all matter? | atoms |
what is a solution? | A mixture where one substance is dissolved in another |
What is a heterogeneous mixture? | A mixture that the particles are visible to see with the human eye. |
What is a homogeneous mixture? | A mixture where the particles are too small to see with the human eye. |
What is a proton? | a positively charged sub-atomic particle. |
What is a neutron? | a neutrally charged sub-atomic particle. |
What is an electron? | a negatively charged sub-atomic particle. |
What is the atomic number? | The muber of protons in an atom. |
What is the atomic mass? | the Mass of the Protons and neutrons added together. |