Periodic Table facts
Chemistry Vocabulary
Elements
Atoms
Other fun facts
100
What happens when you put Na in H2O?
It reacts: smoke, catches on fire
100
Chemistry is the study of______________ .
matter and how it changes
100
Most of the elements on the periodic table are _____________
Metals
100
What part of the atom has a negative (-) charge?
Electron
100
The atomic number tells you how many _________ in that element.
protons
200
How are elements arranged on the Periodic Table?
increasing atomic weight
200
What is needed to change matter from a solid to a liquid?
added energy
OR
added heat
200
What element has the chemical symbol Na?
Sodium
200
What part of the atom has no charge (0)?
Neutron
200
Describe 3 characteristics of a liquid
Any 3 of these:
molecules move freely
can pour
has not shape, or takes the shape of the container
has definite volume and mass
300
How many elements are naturally on Earth? Not man-made?
90
300
Anything that takes up space and has mass is called
Matter
300
What is the chemical formula for salt?
NaCl
300
What part of the atom has a positive (+) charge?
Proton
300
A) What is the symbol?
B) what is the atomic weight
C) what is the atomic number
A) Cl
B) 35.453
C) 17
400
What element only has 1 proton and is the only one it its family/group?
Hydrogen
400
How do you know if chemicals react?
Bubble, change temperature
400
Neon, Krypton, Helium, and Radon are all in the ___________ ___________ family.
Noble gas
400
All matter on Earth is made of ____________
atoms
400
What state of matter has no definite shape, matches the shape of the container, can be dangerous/toxic, molecules move randomly
gas
500
Who was the 1st scientist to put the Periodic Table in order?
Dmitry Mendeleyev
500
If something is made of 2 or more atoms, it is called a __________________
molecule
500
What elements were in the mystery mixture?
NaHCO3 + C6H8O7
OR
baking soda + citric acid
500
The atomic mass of an atom is the _________ + _________
protons + neutrons
500
What element is found in all living things?
Carbon