Name: ________________________________ Period:_______ Due Date____________ Page # :___________ Guided Reading Chapter 10 Section 1 and 2 1. What is Brownian motion? How does it provide evidence that matter is made of atoms and molecules? 2. ____________ is anything that has mass and takes up space. 3. A(n) ______________ is the smallest bit of matter that is pure and can’t be broken down into any other smaller substance by physical or chemical means. 4. A(n) _________________ is the single smallest particle of an element that retains the chemical identity of that element. 5. A compound is a substance that contains ______________________ or more different elements joined chemically, and has the same composition throughout. 6. Sketch the picture of an element, compound, and mixture at the bottom of page 230. 7. Using words and looking at the diagram from pg 230 describe how elements, compounds and mixtures are different from each other. 8. The three units used to measure temperature are __________________, ____________________ and _____________________________ (last one is found on pg 238). 9. _____________________________ is caused by the back and forth “jiggling” of molecules. 10. A ___________________ is an instrument that measures the exact temperature. 11. Digital thermometers work by measuring a change in ___________________________ which changes with a change in temperature. 12. While there is no upper limit to temperature there is a lower limit called ____________________________. It is the temperature at which molecules _____________________. Name: ________________________________ Period:_______ Due Date____________ Page # :___________ Vocabulary Chapter 10 Section 1 and 2 Be careful some terms are closely related to other terms. absolute zero heterogeneous mixture atom homogeneous mixture Celsius intermolecular forces compound Kelvin scale element matter Fahrenheit mixture molecule pure substance temperature thermal energy thermometer 1. ______________ is anything that has mass and takes up space. 2. A pure substance that cannot be broken down into simpler substances by physical or chemical means is a(n) ____________________. 3. The smallest particle of an element is a(n) __________________________. 4. A(n) ___________________________ is a substance that contains two or more elements that are chemically joined. 5. A(n) _______________________ is a group of two or more atoms joined together by chemical bonds. 6. A(n) ____________________ cannot be separated into other types of matter by physical means. 7. Matter that contains a combination of different elements and/or compounds and can be separated by physical means is called a(n) _________________________________________. 8. A(n) ___________________________ is a mixture that is the same throughout. 9. A(n) ___________________________ is a mixture that is not the same throughout. 10. _____________________ is the measure of the average kinetic energy of the particles in matter 11. _____________________ is a temperature scale in which water freezes at 32 degrees. This is used in everyday life. 12. _____________________ is a scale in which water freezes at 0 degrees. This is used in science. 13. Energy due to temperature is called _____________________ 14. You measure temperature with a(n) _____________________ 15. The lowest possible temperature is called _____________________ 16. The_____________________ is a temperature scale that starts with absolute zero.