Chemisty Test

Question 1

Covalent Bonding

Answer 1

Between a non-metal and a non-metal

Question 2

Ionic Bonding

Answer 2

Between a metal and a non metal

Question 3

Density,volume, mass calculations

Answer 3

Mass/volume=density
Mass/density=volume
Density^volume=mass

Question 4

5 clues a chemical change occurred

Answer 4

👉🏻 irreversible 
👉🏻colour change
👉🏻light/heat given off
👉🏻precipitate formation 
👉🏻 bubbling/fizzing gas given off

Question 5

What is a proton?

Answer 5

😊 positive charge located in the nucleus

Question 6

What is a neutron

Answer 6

😐 no charge located in the nucleus

Question 7

What is an electron?

Answer 7

☹️ negative charge located on the energy levels

Question 8

How do calculate the amount of neutrons?

Answer 8

Atomic mass-atomic number

Question 9

How do you calculate the atomic mass?

Answer 9

Neutrons+ atomic number

Question 10

How much do protons and neutrons weigh?

Answer 10

1 amu

Question 11

How much does an electron weigh?

Answer 11

1/2000 less than a proton

Question 12

What does the GRASS method stand for?

Answer 12

🦕 Given
🦕 Required
🦕Analysis
🦕Solve
🦕Summary

Question 13

What is physical change?

Answer 13

A change that cannot alter the chemical identity

Question 14

What is a chemical change?

Answer 14

A change that changes the chemical identity

Question 15

What is an element

Answer 15

❤️A pure substance containing only one kind of atom
❤️Cannot be separated into simpler materials
❤️Over 100 listed and classified on the periodic table

Question 16

What is a compound?

Answer 16

a pure substance containing 2 or more atoms

Question 17

What is a mixture?

Answer 17

two or more compounds or elements not chemically combined.