Question 1

Why do scientists use models?

Accepted Answer

They can be used to test ideas and make predictions.

Answer

They are exact representations of reality.

Answer

They only exist in computer simulations.

Answer

They are always simple and easy to understand.

Question 2

The following are are types of Models except

Accepted Answer

Commercial Model

Answer

Mathematical Model

Answer

Conceptual Model

Answer

Physical Model

Question 3

What can be a limitation of scientific model?

Accepted Answer

They cannot perfectly capture all the complexities of a system.

Answer

They are never updated or improved.

Answer

They are only used in physics, not other sciences.

Answer

They are all based on real-world data.

Question 4

Models can be used to test ideas by simulating specific parts of a system, making it easier for scientists to understand how certain factors affect each other.

Accepted Answer

true

Answer

false

Question 5

Arrange the Atomic Structure Timeline

Question 6

Arrange the following Scientist that proposed Atomic Structure Model

Question 7

Niels Borh discovered this part in the atomic structure that said electrons are moving.

Accepted Answer

orbit

Question 8

Which among the Scientist said that "Atom is made of tiny indivisible particle"

Accepted Answer

John Dalton

Answer

Democritus

Answer

Ernest Rutherford

Answer

Niels Bohr

Question 9

What resembles the Plum Pudding Model of the atom?

Accepted Answer

A positively charged sphere with negatively charges scattered throughout.

Answer

A complex mathematical equation describing electron behavior.

Answer

A tiny, solid ball with negative charges stuck on the outside.

Answer

A miniature solar system with planets orbiting a central nucleus.

Question 10

Why is the Plum Pudding Model helpful for scientists?

Accepted Answer

It shows how atoms are mostly empty space.

Answer

It shows how atoms are indivisible particles.

Answer

It shows the nucleus is the most massive part of the atom.

Answer

It shows electrons have specific energy levels.

Question 11

Which among the Atomic Structure Model is the Electron-Cloud Model

Accepted Answer

E

Answer

B

Answer

D

Answer

C

Answer

A

Question 12

What is the best definition of matter?

Accepted Answer

Anything that has mass and takes up space.

Answer

Anything that can be seen.

Answer

Anything that is hot.

Answer

Anything that is alive.

Question 13

Which state of matter has particles that are widely spread out and move freely, taking both the shape and volume of their container?

Accepted Answer

gas

Answer

liquid

Answer

plasma

Answer

solid

Question 14

What can you say about the particles of liquid in contrast with a solid?

Accepted Answer

More freedom to move and more space between them.

Answer

The same amount of movement and spacing.

Answer

Less movement and are more tightly packed.

Answer

A predictable pattern of movement.

Question 15

What happens to the particles of a material being heated?

Accepted Answer

Moves farther away from each other

Answer

Gains more definite shape and compactness

Answer

Nothing happens because heat is not absorbed

Answer

Slightly compacted but can move

Question 16

Which of the following shows how particles behave when heated?

Accepted Answer

A

Answer

D

Answer

B

Answer

C

Question 17

What is a real-life example of a liquid?

Accepted Answer

Juice in a carton

Answer

A cloud

Answer

A brick

Answer

A rock

Question 18

What is a real-life example of a gas?

Accepted Answer

The air we breathe

Answer

Honey

Answer

A table

Answer

A book

Question 19

Atoms are the fundamental building blocks of elements, while molecules consist of two or more atoms chemically bonded together.

Accepted Answer

true

Answer

false

Question 20

When you boil water, it turns into steam. This is an example of a change from:

Accepted Answer

liquid to gas

Answer

gas to liquid

Answer

solid to gas

Answer

liquid to solid

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