Atoms Practice
Solid
A form of matter that has a definite shape and volume
Subscript
A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound
pure substance
A sample of matter, either a single element or a single compound, that has definite chemical and physical properties
Compound
A substance made up of atoms of two or more different elements joined by chemical bonds
Molecules can be formed as small as 2 atoms, up to thousands!
How many atoms are needed to form a molecule?
6
How many atoms make up this molecule? CuSO₄
6
How many atoms make up this molecule? NaHCO₃
20 Atoms
How many atoms make up this molecule? C₃H₅N₃O₉
24 Atoms
How many atoms make up this molecule? C₆H₁₂O₆
6
How many atoms make up this molecule? H₂CO₃
3
How many atoms make up this molecule? MgCl₂
6
How many atoms make up this molecule? MgSO₄
3
How many elements make up this molecule? CuSO₄
3 (Carbon, Hydrogen, Oxygen)
How many elements make up this molecule? C₆H₁₂O₆
3
How many elements make up this molecule? H₂CO₃
2 Elements (Mg & Cl)
How many elements make up this molecule? MgCl₂
3
How many elements make up this molecule? MgSO₄
4
How many elements make up this molecule? NaHCO₃
Molecule
The simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically
An atom
The smallest particle of an element made of electrons, protons, and neutrons.
The subscript tells you how many atoms of the element are in the molecule.
What does the subscript tell you? H₂O
A molecule is a group of atoms bonded together, representing the smallest unit of a compound or substance.
What is a molecule?
An atoms is a basic unit of matter that consists of protons, neutrons, and electrons. It is the simplest unit of matter that cannot be broken down.
What is an atom?
An element is a substance that cannot be broken down any further. Elements are identified by the number of protons they have.
What is an element?
Molecules are made up of two or more atoms. Atoms are the smallest particle of an element.
What is the difference between atoms and molecules?
crystal
a solid in which the atoms are arranged in a pattern that repeats again and again
Matter
anything that has volume and mass
