Atomic Basics
The smallest unit of matter that keeps the properties of an element.
What is an atom?
The periodic table is arranged in rows called these.
What are periods?
The chemical symbol for oxygen.
What is O?
When two or more substances combine to form something new, it is called this.
The three common states of matter?
What are solid, liquid and gas?
The center of an atom that contains protons and neutrons.
What is the nucleus?
Columns on the periodic table are called these.
What are groups (or families)?
The element we breathe in to survive.
What is oxygen?
A sign a chemical reaction is happening (name one).
What is color change/gas bubbles/heat change/light produced?
In this state, particles move freely and spread out.
What is gas?
The negatively charged particle in an atom?
What is an electron?
Elements in the same group have this in common.
What are similar properties?
What is mercury?
The reactants in a reaction are the ______?
What are starting substances?
This state has a definite shape and deinite volume.
What is solid?
The number of protons in an atom.
What is atomic number?
This element is in Group 1 and reacts strongly with water.
What is sodium?
This element has the symbol Au.
What is gold?
What are the new substances formed?
When a liquid turns into a gas, it is called this.
What is evaporation?
If an atom has 6 protons and 6 neutrons, its atomic number is this.
What is 6?
Who is Dmitri Mendeleev?
What is hydrogen?
When iron reacts with oxygen and forms rust, this type of change is happening.
What is chemical change?
When a solid changes directly into a gas, it is called this.
What is sublimation?
example: dry ice