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Elements, Compunds and Mixtures
Our Earth
The Periodic Table
Chemistry Madness
crystals
100
Al , Cu , N , O , are all symbols for ___
What is an element
100
Carbon, Hydrogen, Oxygen and Nitrogen
What are the four main elements that make up all of living matter on Earth.
100

What is arranged on the periodic table 

elements

100
Substances in a mixture can be separated by physical means because
no chemical change has happened
100

a solid material whose atoms are arranged in a highly ordered repeating pattern

crystals

200
When two or more substances are mixed but not chemically combined, they form a
What is a mixture
200
The atmosphere of the Earth is comprised mostly of oxygen and
What is nitrogen
200
Na is the ____________ ______________ for sodium.
What is a chemical symbol.
200

Compounds can be broken down into simpler substances by chemical means, while elements cannot. 

True or False

True

200

why might crystals in granite not have recognizable geometric shapes?

they crystallize rapidly with limited space 

300

Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is–

contains 1 carbon atom and two oxygen atom.

300

a positively charged particle in the nucleus of an atom

Proton

300

3NaC2O has how many molecules of

3

300
A substance that contains only one kind of atom is called___.
What is an element
300

crystals have highly ordered, repeating patterns of atoms. True or False

true 

400
How many elements are in the compound Fe2O3?
2 elements
400

a neutrally charged particle in the nucleus of an atom

neutron

400

Water is an example of an element T or F

False 

400

a change that results in the formation of new substances with different properties 

chemical change 

400

what are the 6 types of crystals? 

cubic, hexagonal, tetragonal, orthorhombic, monoclinic, and triclinic

500
The smallest part of a compound that still acts like that compound is ___.
a molecule
500

a negatively charged particle that orbits the nucleus of the atom

electron

500

what determines an elements atomic number?

the number of protons

500

a change in the form or appearance of a substance that does not change its chemical identity

physical change 

500

crystals are in DNA and ceramics. True or False

True