8. How are elements classified? A. Elements are all metals.
B. Elements are all non-metals.
C. It is classified into metals and non-metals only
D. It is classified into metals, metalloids and non-metals
9. How are physical properties of elements observed?
A. It is observed by looking at the chemical changes.
B. It is by examining a sample of the pure element.
C. It is by looking at the physical changes.
D. It is by looking at the physical and chemical changes of the element
10. Why is Aluminium used in the production of industrial materials?
A. It is lightweight and durable.
B. It can combine with other elements.
C. It is used in torches for welding.
D. It can yield very high temperatures.
11. One of the important elements in the human body is Sodium. Why is Sodium important
in the human body?
A. It provides the human body with energy
B. It plays a crucial role in protecting the body and preserving joints
C. It is the most important constituent of animal cells.
It is useful in transmitting nene cia

8.C

9.D

10.B

11.A

Explanation:

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The following are the Common Electrical Wire Splices and Joints.  or joint in interior wiring installation to extend the length of wire from one point to another. conductors where it is difficult to wrap the heavy tap wire around the main wire.

Explanation: sna makatulong po and correct me nlng po if im wrong ty ket pa mark lng po

Why are bones important in our body?

Bones provide support for our bodies and help form our shape. Although they're very light, bones are strong enough to support our entire weight. Bones also protect the body's organs. The skull protects the brain and forms the shape of the face.

answer:

1.B

2.B

3.A

4.D

5.A

Explanation:

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answer:

Although they're very light, bones are strong enough to support our entire weight. Joints are where two bones meet. They make the skeleton flexible — without them, movement would be impossible. Muscles are also necessary for movement: They're the masses of tough, elastic tissue that pull our bones when we move.

Explanation:

Wc

answer:

flat bones

long bones

short bone

irregular bones

sesamoid bones

Explanation:

follow

answer:

Joints are where two bones meet. They make the skeleton flexible — without them, movement would be impossible. Joints allow our bodies to move in many ways.

answer:

They make the skeleton flexible, without the joints our movement will be impossible.

Explanation:

c

Explanation:

To protect joints from dislocation