Chemical Reaction I
The atomic number of an element tells us:
1) protons
2) electrons
3) neutrons
4) protons and neutrons
Number of protons and its electrons
Difference between physical and chemical change
during a physical change, the substance stays the same; during a chemical change, a new substance forms
Is oxygen an element, compound or mixture
element
Free 100 points
Free 100 points🙂
What is Ms Kennys daughters name?
Leanna
Rust forms when metal (iron/steel) comes into contact with water or moisture and oxygen
1) physical change
2) chemical reaction
A chemical reaction
An increase in temperature will usually cause the molecules to...
Increase
Is H2O an element, compound or mixture?
Compound
Everything is made up of....
Matter
What is Ms Kennys favorite color?
yellow
Which one of the following is a chemical change, NOT a physical change:
splitting wood
melting ice
burning wood
Burning wood
Color, texture, bending, tearing, melting, boiling, dissolving are all examples of this
1) physical change
2) chemical change
words that indicate a physical change
Mixture
We classify elements on the..
1) hardness scale
2) periodic table
Periodic Table
What is Ms Marinis' first name?
Pauline
Dying your hair is a...
1) Physical change
2)Chemical change
What list the atoms in this chemical formula
C6H12O6
Carbon:
Hydrogen:
Oxygen:
6
12
6
What is a compound?
A solution is when something _________ in the other
1) disappears
2) dissolves
Dissolves
What is arachnophobia?
A fear of...
spiders
how is CO different from CO2
CO2 has 2 oxygens while CO has only 1
Give three examples that a chemical change has taken place (something NEW has been created)
temp. change, color change, odor change ect.
Are mixtures chemically combined together or physically combined together
physically
The type of energy that a particle has when it is in motion
It is kinetic energy
What Disney movie has sebastian the crab in it?
The little mermaid