8th Grade Science - Unit 1
🇬🇧
In English
In English
Practice Known Questions
Stay up to date with your due questions
Complete 5 questions to enable practice
Exams
Exam: Test your skills
Course needs 15 questions
Learn New Questions
Manual Mode [BETA]
Select your own question and answer types
Specific modes
Learn with flashcards
Complete the sentence
Listening & SpellingSpelling: Type what you hear
multiple choiceMultiple choice mode
SpeakingAnswer with voice
Speaking & ListeningPractice pronunciation
TypingTyping only mode
8th Grade Science - Unit 1 - Leaderboard
8th Grade Science - Unit 1 - Details
Levels:
Questions:
10 questions
| 🇬🇧 | 🇬🇧 |
| What is an atom? | Smallest particle of an element that maintains the properties of that element |
| What is atomic mass? | Average mass number of all atoms of an element (from particles in the nucleus) |
| What does the atomic number represent? | The number of protons in the nucleus of an atom; used to determine an element's position in the Periodic Table |
| What is a chemical property? | A characteristic of a substance that describes how it combines with other substances to form new ones |
| What is an electrical charge? | A property of a subatomic particle; positive (protons), negative (electrons), or neutral (neutrons) |
| What is an electron? | A negatively charged particle in the electron cloud surrounding the atomic nucleus |
| What is an electron cloud? | The negatively charged space containing electrons that surrounds the atomic nucleus |
| What is an element? | A pure substance that cannot be broken down chemically into simpler substances |
| What are groups (families)? | The vertical columns on the Periodic Table |
| What is a mass number? | Total number of protons and neutrons in a specific atom |