Types of Matter
Two or more physically combined substances form —
A an element
B a compound
C a mixture
D an acid
C a mixture
Burning paper is an example of what kind of change?
Chemical
You need your marker and dry erase board:
Draw the particles of a solid in a container
Particles all very close together
How should 0.000365 be expressed in proper scientific notation?
3.65 x 10-4
These are the data collected for an experiment.
100.00
99.97
99.98
99.50
The accepted value was supposed to be 107.00. What kind of accuracy and precision does this group have?
Poor accuracy, good precision
What is an example of a compound?
A Oxygen
B Air
C Salt water
D Table salt
D Table salt
Melting ice is which kind of change?
Physical
A substance with no definite volume and no definite shape is classified as a —
A gas
Round 458,396 to three significant figures.
458000
or
4.58 x 10^5
The separation process that separates mixtures based upon boiling point is called-
Distillation
A substance made of only one type of atom is called—
A a compound
B an element
C a salt
D a mixture
B an element
What is NOT a physical change?
A freezing cheese
B burning cheese
C vaporizing cheese
D melting cheese
B burning cheese
A substance with a definite volume and a definite shape is classified as a —
solid
Getting the actual or accepted value from an experiment is called-
Accuracy
The type of Chemistry that pertains to Carbon is called-
Organic Chemistry
What is an example of a mixture?
A Pure water
B Air
C Oxygen
D Table salt
B Air
When matter undergoes a change in form, but the chemical make up is NOT changed, it is a —
A chemical change
B nuclear reaction
C physical change
D chemical reaction
C physical change
The separation process that separates a mixture into solid and liquid is called:
Filtration
Getting multiple measurements close together is called-
Precision
The type of Chemistry that pertains to biology and chemistry working together is called-
Biochemistry
A substance made up of two or more elements that have been chemically combined is called—
A a mixture
B an atom
C a compound
D an element
C a compound
A homogenous mixture called also be called a-
Solution
Salad is a mixture. Which kind?
Heterogenous mixture
A student measured the density of a gold necklace and found it to be 19.6 g/cm3 . What is the percent error if the actual density of gold is 19.3 g/cm3? Make sure to use proper sig figs in your answer.
1.55%
The type of Chemistry that determines the chemical makeup/composition of substances/mixtures is called-
Analytical Chemistry