What is a pure substance that cannot be broken down into any other substance by physical or chemical means. Ex: Gold, Silver, Oxygen, & Nitrogen
element
compound
mixture
salad
2. Multiple Choice
30 seconds
1 pt
What is a pure substance made of two or more elements chemically combined in a set ratio. Ex: CO2 has a set ratio of 1:2, meaning for every one carbon atom there are two oxygen atoms.
element
compound
mixture
salad
3. Multiple Choice
30 seconds
1 pt
What is an atom which has gained or last electrons called?
isotope
atom
ion
balanced
4. Multiple Choice
30 seconds
1 pt
What type of property can only be observed by changing the substance into a new substance. Ex: Flammability, oxidation
chemical
physical
5. Multiple Choice
45 seconds
1 pt
What type of mixture contains visible parts (like a salad or a pizza or granite)
homogenous
heterogenous
6. Multiple Choice
30 seconds
1 pt
What is matter
Anything which is solid
Anything that takes up space and has mass
when something is wrong
7. Multiple Choice
45 seconds
1 pt
Gold is an example of a(n)
pure element
pure compound
pure mixture
8. Multiple Choice
45 seconds
1 pt
Air is an example of a(n)
element
compound
heterogenous mixture
homogenous mixture
9. Multiple Choice
45 seconds
1 pt
Phase changes (going from a solid to a liquid to a gas) are what types of changes?
chemical
physical
10. Multiple Choice
45 seconds
1 pt
Elements in a compound can be separated __________
physically
chemically
11. Multiple Choice
30 seconds
1 pt
who developed the modern day periodic table of elements?
Darwin
Shultz
Hooke
Mendeleev
12. Multiple Choice
30 seconds
1 pt
On the Periodic Table each element increases by one _________
electron
proton
neutron
letter
13. Multiple Choice
30 seconds
1 pt
A row across the Periodic Table where each element has the same number of energy shells
column
family
period
14. Multiple Choice
30 seconds
1 pt
In a family or column, the elements have similar properties because they all have the same number of
protons
neutrons
valence electrons
electrons
15. Multiple Choice
30 seconds
1 pt
What is the octet rule? How many valence electrons can the first three periods hold?
8
2
2 8 8
2 8 16
16. Multiple Choice
30 seconds
1 pt
Whether or not bonds form is due to the ?????
valence electron configurations
protons
atomic mass
chance
17. Multiple Choice
30 seconds
1 pt
In what type of bond are electrons gained or lost? This happens between a metal and a non-metal?
ionic
covalent
subatomic
18. Multiple Choice
30 seconds
1 pt
In this type of bond electrons are shared by two non-metals
ionic
covalent
subatomic
19. Multiple Choice
30 seconds
1 pt
The Law of Conservation of Matter says
Matter can be created, but not destroyed
matter can be destroyed, but not created
matter cannot be created or destroyed
20. Multiple Choice
45 seconds
1 pt
When heat is added to matter, the molecules tend to
move faster and farther apart
slow down
nothing, heat has no impact on the state of matter