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Which of the changes described in Figure 4 grade 9 science textbook page 30 involve chemical and physical changes?
I'm not an expert in Chemistry but I think the changes involving in this Figure 4 are the steel changing into rust, and harmful gases changing into safer new gases for physical changes. Also, they are the steam from the exhaust condensating into a white cloud, the explosion of the gasoline air mixture producing hot exhaust gases for chemical changes. Hope it helps a lot!
What changes occur to raw materials during the paper making process?
Papermaking is a series of physical and chemical changes. The physical and chemical changes will depends on raw material used and grade of paper manufactured. For a typical north American paper mill which uses wood for making copying paper, following changes will take place. Operation Type of Change Logging Physical Barking (Removal of bark) Physical Chipping Physical Screening Physical Cooking Chemical Washing Physical Chemical Recovery Chemical Bleaching Chemical Washing Physical Refining Physical Sizing Chemical & Physical Screening Physical Cleaning Physical Wet-end chemical addition Chemical & Physical Sheet Formation Physical Pressing Physical Drying Physical Calendaring Physical Winding Physical Rewinding Physical Cutting Physical
Is support combustion chemical or physical change?
It is a phiscal change because the combustion doesn't change. I'm in the 7th grade and nobody older than me answered this question! That is a shame!
Is kool-aid powder dissolving in water a physical or chemical change?
no it isn't. My 6th grade teacher told me that and i still don't really understand it.
what is the unit of purity of a chemical sustance?
If you are referring to chemical purity by grade, I suggest you research the following terms: ACS Grade (American Chemical Society) - highest level of purity Reagent grade - Almost as stringent as ACS USP Grade - Equivalent to ACS for many drugs NF Grade (National Formulary) - Equivalent to ACS for many drugs Laboratory Grade Purified Grade Technical Grade
What elements make up acetic acid in the physical and chemical changes of science?
a chemical chang is a chang that ends up in a new subtanes im in 5 grade and i know that
Which of the changes described in Figure 4 grade 9 science textbook page 30 involve chemical and physical changes?
I'm not an expert in Chemistry but I think the changes involving in this Figure 4 are the steel changing into rust, and harmful gases changing into safer new gases for physical changes. Also, they are the steam from the exhaust condensating into a white cloud, the explosion of the gasoline air mixture producing hot exhaust gases for chemical changes. Hope it helps a lot!
What changes occur to raw materials during the paper making process?
Papermaking is a series of physical and chemical changes. The physical and chemical changes will depends on raw material used and grade of paper manufactured. For a typical north American paper mill which uses wood for making copying paper, following changes will take place. Operation Type of Change Logging Physical Barking (Removal of bark) Physical Chipping Physical Screening Physical Cooking Chemical Washing Physical Chemical Recovery Chemical Bleaching Chemical Washing Physical Refining Physical Sizing Chemical & Physical Screening Physical Cleaning Physical Wet-end chemical addition Chemical & Physical Sheet Formation Physical Pressing Physical Drying Physical Calendaring Physical Winding Physical Rewinding Physical Cutting Physical
Is melting ice is a chemical or physical change?
This is easy;it's a physical change because it's still water(H2O). It just changes state.You should know this if you're in 6th grade and up.
Is breaking a skateboard a physical change?
Yes, because only its appearance is being changed not its atoms. Also most, if not all, physical changes can be reversed (or "repaired" in this case). Only particular chemical changes can be reversed using other cemical changes. Examples of other physical changes include: tearing paper into many pieces getting your hair cut cracking a glass window Examples of chemical changes include: the change of raw batter into bread (baking) the change of iron into rust (oxidizing) the change of wood into ash (burning) hope this helps! PS by the way this is 6th grade stuff, I mean come on!
A chemical change is a change in the of a substance?
A chemical change is a change in which a change of matter that produces one or more new substances is a chemical change.Unlike a physical change, a chemical change produces new substances with new and different properties. Examples of chemical changes are combustion,electrolysis, oxidation,and tarnishing, frying an egg, burning of wood, cutting a tree.
When rocks undergo chemical changes as the result of chemical reactions it is called what?
It is called chemical weathering, and it's one of the many processes that shape the landforms of our planet. ++ That is one route but there are also high-grade (pressure and heat) metamorphism, and the complex series of physical and chemical reactions that take place in magma rising from partially-melted, subducted, plates.
Is support combustion chemical or physical change?
It is a phiscal change because the combustion doesn't change. I'm in the 7th grade and nobody older than me answered this question! That is a shame!
Chemical Fertilizer Agriculture Grade/Technical Grade N46 Wholesale Urea.?
Chemical Fertilizer Agriculture Grade/Technical Grade N46 Wholesale Urea.
Is a glass blower creating sculptures a physical or chemical change?
yes it is a chemical change because it turned into something new a scultureWRITTEN BY ISABELLA GARCIAIN ROGERS MIDDLE SCHOOL6TH GRADE
What is the price for a kilo of uranium?
Depending on: purity (ore, concentrate, laboratory reagent, nuclear grade, etc.), physical form, chemical form, etc.
What is the grade of weathering?
Weathering is typically classified into three main grades: physical weathering, chemical weathering, and biological weathering. Physical weathering involves the breakdown of rocks into smaller pieces without changing their chemical composition. Chemical weathering involves the alteration of rock composition due to chemical reactions. Biological weathering is the breakdown of rocks by living organisms.
