Benchmark Flashcards
How many sig digs are in the following number: 8.8000
5
How many sig digs are in the following number: 13.74
4
How many sig digs are in the following number: 26,001,000
5
What are pure substances?
Elements and compounds
What are the two types of mixtures?
Homogeneous and heterogeneous
What are the two types of compounds?
Ionic and molecular
What are three types of elements?
Metals, non-metals, and metalloids
Identify the following change as physical or chemical: Iron rusts
Chemical
Identify the following change as physical or chemical: Paper burns
Chemical
Identify the following change as physical or chemical: Hot iron cools
Physical
Identify the following change as physical or chemical: Ice melts
Physical
Identify the following change as physical or chemical: Glass breaks
Physical
Identify the following change as physical or chemical: Silver tarnishes
Chemical
Say whether each is a substance; element or compound or a Mixture; homo or hetero: sodium
Substance; element
Say whether each is a substance; element or compound or a Mixture; homo or hetero: carrot cake batter.
Mixture; hetero
Say whether each is a substance; element or compound or a Mixture; homo or hetero: Vegetable Soup
Mixture; hetero
Say whether each is a substance; element or compound or a Mixture; homo or hetero: Calcium
Substance; compound
Say whether each is a substance; element or compound or a Mixture; homo or hetero: blood
Mixture: hetero
Homogeneous or heterogeneous?
WATER
Homo
Homogeneous or heterogeneous?
LUCKY CHARMS
Hetero
Homogeneous or heterogeneous?
DIRT
Hetero
Homogeneous or heterogeneous?
GOLD
Homo
Element, compound or mixture?
SILVER
Element
Element, compound or mixture?
GLUCOSE
Compound
Element, compound or mixture?
SEAWATER WITH DRIFT WOOD AND SEAWEED
Mixture
Element, compound or mixture?
A BIG MAC
Mixture
What regions are an atom divided into?
Nucleus and electron cloud
Where are the protons located?
Nucleus
Where are electrons located?
Electron cloud
Where are neutrons located?
In the nucleus
Atomic number Z represents:
Number of protons
Mass number A represents:
The number of protons plus neutrons
If an atom loses or gains an electron it becomes an:
Ion
