PEMDAS SIGFIGS
2.34+2.4+323.589
328.3
Convert 20mL to kL
0.00002kL
Convert 23cm to feet
0.75ft
What element is in the same family as fluorine and the same period as indium? Is it a metal/metalloid/nonmetal?
Iodine (I). It is a non-metal
Sugar dissolved in water
Homogenous solution
25.1x4.32
108
Convert 32.34 ML to mL
32,340,000,000 mL or 3.234x10^10 mL
Convert 23 meters to yards (1 yard=3 feet)
25yd
What element is in the same family as indium and the same period as fluorine? Is it a metal/metalloid/nonmetal?
Boron (B). It is a metalloid.
Sand put in water, it doesn't fully dissolve.
Heterogenous
(23.1+45.2)x8.1
550
Convert 14dm to km
0.0014km
How many minutes in 3.50 days? (hint, either do the dimensional analysis, or it was on your review packet)
5040 minutes
Place the following chemical formulas into the following venn diagram categories:
(Element )( Molecule ( Compound) )
H2O, Cl, NO3, H2, O2, Cl2, O3,
(Element Cl )
(Molecule O3 Cl2 O2 H2 (H2O NO3 Compound) )
Compounds do NOT keep the properties of their components. Do mixtures?
Yes
81.52/32+3.564
6.1
what is the only SI PRIMARY base unit to have a metric prefix on it?
Convert 2.00oz to grams (1kg=2.20462lb) (1lb=16oz)
56.7g
Shiny, good conductor of electricity, solid at room temperature, and malleable/bendy. What is it and where is it on the periodic table?
Metals, majority of the left and middle of the table.
Typical garden soil
heterogenous mixture
231x41.122
9.50x10^3
Convert 12Mg to ug
1.2x10^13ug, or 12,000,000,000,000ug
How many milliseconds are in 1.00 year?
3.15x10^10ms, or 31,500,000,000ms
Compounds generally have the same properties as the components that make them up.
False. They can usually have wildly different properties from the atoms that make them up.
What are the definitions for homogenous and heterogenous mixtures?
Homogenous mixtures are mixed thoroughly and evenly, with an even distribution of components throughout. Heterogenous is not mixed thoroughly, and has an uneven clumpy distibution.