a chemical reaction is when you change the properties of something and you cant change it back:example>:burning paper
The nucleus is like the principal of a school.
This type of reaction is known as a decomposition reaction. It involves the breaking down of a single compound into two or more simpler substances. Examples include the decomposition of hydrogen peroxide into water and oxygen, or the decomposition of copper carbonate into copper oxide and carbon dioxide.
He carried a rabbit's foot for luck, believing in its charm.
Sodium and Chlorine. The chemical formula is NaCl. Ask me any other question a 5th grader would know (that's what grade I'm in. I'm 11).
For making the density of water higher. That is because when more salt is added, at a certain point the water cannot dissolve much of salt. so on this point the density rises above its constant density i.e. 1000 kgm-3 at 4.c.
I would say 4th or 5th grade.
5th grade. Elementry school. Comes after 4th grade.
5th grade
The books are rated grade 9 and up for mature theme. Reading level is from 5th grade to 7th grade.
Chemical Toilet
Although the average is supposedly at an eighth grade reading level, the actual level is somewhere between a 5th and 6th grade reading level.
5th grade and up
Huey Freeman goes to J. Edgar Hoover elementary school.
Anywhere from advanced fourth of fifth up.
An example of a possible selection word for 5th grade could be "discreet." Students at this grade level can explore the meaning, spelling, and usage of this word to enhance their vocabulary and writing skills.
It would depend on the car you're driving and if you are driving up a grade or down a grade or on the level. On a level grade probably 40-45 mph would work.
a good level