Question

C. Say whether the statements are true
or false.
1. An element is made of only one kind of atom.
2. Carbon dioxide is made of carbon and
oxygen.
3. A mixture is a substance that has two or
more elements in a fixed ratio.
4. The components of a mixture retain their
properties in the mixture.
5. A symbol can be used to represent an
element or an atom of an element.
6. The number of atoms in a molecule of an
element is called its formula.
7. An equation is balanced to make sure that
the number of atoms of each element is the
same on both sides of the equation.
8. Rusting is a physical change.
9. A physical change can be reversible or
irreversible.
10. Crystallisation is an irreversible change.​

Answer 1

Answer:

1.true

2.true

3.false

4.true

5.true

6.false