Science revision HY

Question 1

What are the 4 states of matter?

Answer 1

Solid, liquid, gas and plasma

Question 2

What are the characteristics of a solid

Answer 2

-Atoms are in a honeycomb shape, leaving no space in between eachother
-solids stay in their shape

Question 3

What are the characteristics of a liquid

Answer 3

-atoms more spread apart, with no fixed shape yet maintaining a distance from eachother.
-takes the shape of the container

Question 4

What are the characteristics of a gas

Answer 4

-atoms are unrestricted and carefree, taking the shape of whatever room/container

Question 5

What are the characteristics of plasma

Answer 5

It’s essentially an ionized gas where a significant number of atoms have lost electrons, creating a mixture of ions and free electrons. This electrically charged gas is highly conductive and influenced by electric and magnetic fields.

Question 6

Density formula

Answer 6

density = mass/volume

Question 7

What is density?

Answer 7

Density is the mass of a certain volume , and it depends on how tight the particles are packed together.

Question 8

What is an independent variable?

Answer 8

An independent variable is a factor that a researcher manipulates or changes in an experiment to see if it affects another variable

Question 9

What is a dependent variable?

Answer 9

A dependent variable is what you measure in the experiment and what is affected during the experiment