Science atom

Question 1

What is an element?

Answer 1

A basic substance made of only 1 type of atom and cannot be broken down.

Question 2

What is a compound?

Answer 2

A chemical substance made of two or more elements chemically bonded together.

Question 3

Whats a homogenous mixture?

Answer 3

You cannot see the difference. the componets are evenly distribujted

Question 3

What is a mixture?

Answer 3

Two or more substances blended but are physically seperate and can be seperated by physical methods.

Question 4

Whats a heterogenous mixture?

Answer 4

You can see the difference. (solution)

Question 5

What are the 3 particles in an atom.

Answer 5

Subatomic particles, protons, neutrons, electrons.

Question 6

What are protons?

Answer 6

Have a postive charge, not invloved in bonding, affects mass of an atom, amount of protons changes the element.

Question 7

What is matter?

Answer 7

Any thing that takes up space or weight.

Question 8

What are atoms?

Answer 8

Fundamental building blocks of all matter.

Question 9

What are molecules?

Answer 9

A group of atoms bonded together.

Question 10

What are neutrons?

Answer 10

They stable the atom, relativeley have the same mass as a proton, have no charge(neutral)

Question 11

What are electrons?

Answer 11

They have a negative charge, bonding between atoms is based on electrons, they cannot be broken down, in shells that orbit the neucleus.

Question 12

What is the neucleus?

Answer 12

Its made of protons and neutons, has an overall postive charge, the reason why atoms are stable, reason why there are different types of elements(bc number of protons and neutrons in it)

Question 13

How many electrons in each shell?

Answer 13

2 in first, 8 in second, 18 in third

Question 14

Whats the law on conservation of mass?

Answer 14

Matter cannot be destroyed or created only rearranged, mass of products and reactants are the same, open system lets mass escape while closed traps it.