Question

What is PARTICLE
WHAT IS ATOM
WHAT IS MOLECULE
WHAT IS SUBSTANCE​

Answer 1

Answer:

• a particle is a small localized object to which can be ascribed several physical or chemical properties such as volume, density or mass.
• An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.
• Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.
• A substance is called as an object.

Answer 2

*＊✿❀ ʜᴇʟʟᴏ ❀✿＊*

ǫ) ᴡʜᴀᴛ ɪs ᴘᴀʀᴛɪᴄʟᴇ?

ᴀ) ᴀ ᴍɪɴᴜᴛᴇ ᴘᴏʀᴛɪᴏɴ ᴏғ ᴍᴀᴛᴛᴇʀ.

ǫ) ᴡʜᴀᴛ ɪs ᴀᴛᴏᴍ?

ᴀ) ᴀɴ ᴀᴛᴏᴍ ɪs ᴛʜᴇ sᴍᴀʟʟᴇsᴛ ᴜɴɪᴛ ᴏғ ᴏʀᴅɪɴᴀʀʏ ᴍᴀᴛᴛᴇʀ ᴛʜᴀᴛ ғᴏʀᴍs ᴀ ᴄʜᴇᴍɪᴄᴀʟ ᴇʟᴇᴍᴇɴᴛ.

ǫ) ᴡʜᴀᴛ ɪs ᴍᴏʟᴇᴄᴜʟᴇ?

ᴀ) ᴀ ᴍᴏʟᴇᴄᴜʟᴇ ɪs ᴛʜᴇ sᴍᴀʟʟᴇsᴛ ᴘᴀʀᴛɪᴄʟᴇ ɪɴ ᴀ ᴄʜᴇᴍɪᴄᴀʟ ᴇʟᴇᴍᴇɴᴛ ᴏʀ ᴄᴏᴍᴘᴏᴜɴᴅ ᴛʜᴀᴛ ʜᴀs ᴛʜᴇ ᴄʜᴇᴍɪᴄᴀʟ ᴘʀᴏᴘᴇʀᴛɪᴇs ᴏғ ᴛʜᴀᴛ ᴇʟᴇᴍᴇɴᴛ ᴏʀ ᴄᴏᴍᴘᴏᴜɴᴅ.

ǫ) ᴡʜᴀᴛ ɪs sᴜʙsᴛᴀɴᴄᴇ?

ᴀ) ᴍᴀᴛᴛᴇʀ ᴏғ ᴘᴀʀᴛɪᴄᴜʟᴀʀ ᴏʀ ᴅᴇғɪɴɪᴛᴇ ᴄʜᴇᴍɪᴄᴀʟ ᴄᴏɴsᴛɪᴛᴜᴛɪᴏɴ.