With all
1.
check all the statements that are correct. conservation of mass means:
1.matter can be destroyed in a chemical reaction
2.we can start a reaction with different types of elements than we have at the end of the reaction.
3.we must start and end with the same amounts of matter
4.matter cannot be created
question 2
select all of the signs of a chemical reaction
1.a solid is formed
2.the change can be easily undone
3.the state of matter changes
4.a gas is released
5.a temperature change happens
6.a color change happens
question 3
a chemical
1.creates one or more new substances
2.happens in the water cycle
3.is only a physical change
4.is when something changes the state of matter
question 4
changing from one state of matter to another is a
1.physical change
2.chemical reaction
3.chemical change
4.optical illusion
question 5
during a chemical
1.the substances change by rearranging the atoms and elements
2.matter can be destroyed
3.new matter is created
4.energy is created
!
Answers: 3
Chemistry, 23.06.2019 00:50
Which of the following warnings would an agricultural chemist tell a farmer who wants to recycle his or her own ammonia? recycling ammonia is a difficult process that sometimes takes weeks. recycling ammonia requires a degree in biochemistry or a related field. recycling ammonia can be harmful because it is highly flammable and toxic. recycling ammonia costs too much money considering the price of the necessary chemicals.
Answers: 1
With all
1.
check all the statements that are correct. conservation of mass me...
1.
check all the statements that are correct. conservation of mass me...
Mathematics, 15.05.2020 16:57
Mathematics, 15.05.2020 16:57
Mathematics, 15.05.2020 16:57
Mathematics, 15.05.2020 16:57
Mathematics, 15.05.2020 16:57
Chemistry, 15.05.2020 16:57
Social Studies, 15.05.2020 16:57
Mathematics, 15.05.2020 16:57
Mathematics, 15.05.2020 16:57
Physics, 15.05.2020 16:57
Mathematics, 15.05.2020 16:57
Health, 15.05.2020 16:57