Show:
Atoms
Elements
Chemical vs Physical
WHMIS
Suprise
100
What is all found in an atom
protons electrons and neutrons
100
What are the first two elements of the periodic table?
Hydrogen and Helium.
100
If the object changes colour is it a chemical or a physical change?
chemical change
100

A symbol with a fire on it means...?

flammable

100
The three states of matter are
Solid Liquid Gas
200
Which of the following are found in the nucleus? Protons Electrons Neutrons
Protons Electrons
200

What element is number 92 in the periodic table?

Uranium

200
Water freezing is a chemical or physical change?
a physical change becuase no new substance was made
200

A symbol with skull and crossbones means...?

poison 

200

Is colour a quantitative or qualitative Property? 

qualitative

300
The atomic mass number represents the number of.....
protons and neutrons
300

What two groups is the periodic table seperated into?

Metals and Non Metals

300

Describe some of the indicators that a chemical change has occured.

smell, heat or light, colour change

300

An example of something that might be labelled with a biohazardous symbol

....

300
Give the chemical formula for water
H2O
400

Electrons float around the center nucleus of an atom. True or false.

true

400
What are the following elements names. Na K C Cl
sodium potassium calcium chlorine
400

Crushing a can is a chemical or physical change

physical

400

Name an example of something that could be corrosive?

...

400
the number of protons also equals the number of
electrons
500
Name all the charges of the following and explain where they are found. Protons Electrons Neutrons
Protons (+) electrons (-) neutrons. (n)
500

Halogens are in which group of the periodic table?

17

500
cooking an egg, chemical of physical change ?
Chemical change because a new substance has been made
500

What does the symbol flame over circle mean?

oxidizer 

500
If an atom gives away its electrons to become stable it has a _____ charge
postive