Question

1. In chemical change new substance are formed.
(a) True(b) False
2.Baking cake and burning wood are chemical changes.
(a) True(b) False
3.Burning of wood is an example for exothermic reaction.
(a) True(b) False
4.A reaction in which chemical change occur is called a physical reaction.
(a) True(b) False
5.Chemical reaction in which heat is absorbed by the substance is called__________ reaction
6.When two clear substance combines, an insoluble solid is formed that settle downs as a ____________
7.A chemical reaction is represented by a chemical ____________
8.The new substance formed during a reaction are known as ____________
9.which of the following is/ are true when milk changes in to curd?
10.A chemical change may involve
(a) change in colour only(b) change in temperature only(c) evolution of gas only(d) all of the above
11.Which of the following statement is incorrect for a chemical reaction?
(a) Heat may be given out but never absorbed.(b) Sound may be produced.(c) A colour change may take place.(d) A gas may be evolved

Answer 1

Answer:

all are my correct mark as brainliest

Explanation:

1 true

2 true

3 true

4 false

5

6 sediment

7 change

8 chemical

9 it changes its texture

10 d all

11 a heat one

Answer 2

Explanation:

In chemical change new substance are formed

:-) True

Burning of wood is an example for exothermic reaction.

:-) True

Baking cake and burning wood are chemical changes.

:-) True

A reaction in which chemical change occur is called a physical reaction.

:-) false.

Chemical reaction in which heat is absorbed by the substance is called__________ reaction

:-) Endothermic

When two clear substance combines, an insoluble solid is formed that settle downs as a ____________

:-) precipitate

A chemical reaction is represented by a chemical ____________

:-) formula

The new substance formed during a reaction are known as ____________

:-) Products

which of the following is/ are true when milk changes in to curd?

:-) chemical changes

A chemical change may involve

:-) all of the above.

Which of the following statement is incorrect for a chemical reaction?

:-)Heat may be given out but never absorbed