Use Mohs' hardness scale to answer the following
question.
Mohs' Hardness Scale
softer<...
Chemistry, 23.03.2021 18:40 puchie1225
Use Mohs' hardness scale to answer the following
question.
Mohs' Hardness Scale
softer
Talc
fingernail
(2.5)
Gypsum
2
Calcite
Fluorite
glass
(5.5)
Apatite
Orthoclase
Quartz
Topaz
8
steel nail
(6.5)
Corundum
9
Diamond
10
harder
A sample can be scratched by glass but not by a fingernail. Which two could be a sample be made of? A. Gypsum B. Fluorite C. Apatite D. Orthoclase
Answers: 2
Chemistry, 22.06.2019 10:30
Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:
Answers: 1
Chemistry, 22.06.2019 12:00
Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
Answers: 2
Chemistry, 22.06.2019 20:30
Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?
Answers: 1
Health, 26.07.2021 19:40
Mathematics, 26.07.2021 19:40
Mathematics, 26.07.2021 19:40
Social Studies, 26.07.2021 19:40
Mathematics, 26.07.2021 19:50
English, 26.07.2021 19:50
History, 26.07.2021 19:50
Chemistry, 26.07.2021 19:50
Chemistry, 26.07.2021 19:50