counting atoms, physical and chemical properties, density, significant figures, scientific notation
Question 1
1.
How many molecules are represented here: 4 Hg
Question 2
2.
Baking powder contains: sodium bicarbonate, cornstarch, calcium phosphate and other components. Baking powder is classified as a .......
Question 3
3.
Report this number in two significant figure: 39704.89
Question 4
4.
Question 5
5.
Which of the following is a TRUE statement? Multiple answers may apply.
Question 6
6.
Which of the following is a FALSE statement?
Question 7
7.
Convert 198213.01 cm^3 = _______________________kL. Sig Figs Matter! Show your work on scrap paper and submit at end of test.
Question 8
8.
Convert 89.120 g = ________________ ng. Sig Figs Matter! Show your work on scrap paper and submit at end of test.
Question 9
9.
Convert 0.09173 m^3= ______________ mm^3. Sig Figs Matter! Show your work on scrap paper and submit at end of test.
Question 10
10.
Convert 51.2 x 10^7 Gm = ____________km. Sig Figs Matter! Show your work on scrap paper and submit at end of test.
Question 11
11.
Convert 0.689 cm^2= ________ dm^2. Sig Figs Matter! Show your work on scrap paper and submit at end of test.
Question 12
12.
Put the following in proper scientific notation: 0.000000420 x 10^5. Sig Figs Matter!
Question 13
13.
Put the following in proper scientific notation: 220000.0 x 10^-12. Sig Figs Matter!
Question 14
14.
Put the following in proper scientific notation: 12.80 x 10^3. Sig Figs Matter!
Question 15
15.
Put the following in proper scientific notation: 97000000.0. Sig Figs Matter!
Question 16
16.
State whether the following is an atom, element, compound and/or molecule. You can have more than one response: 2 CO
Question 17
17.
State whether the following is an atom, element, compound and/or molecule. You can have more than one response: 6 Fe
Question 18
18.
State whether the following is an atom, element, compound and/or molecule. You can have more than one response: 9 O2
Question 19
19.
How many significant figures are in the following? 210000 g
Question 20
20.
How many significant figures are in the following? 0.013400 L
Question 21
21.
How many significant figures are in the following? 8.0 x 10^-1
Question 22
22.
Perform the following calculation and follow sig fig rules for your answer: 5000 g/ 20.0 mL
Question 23
23.
Perform the following calculation and follow sig fig rules for your answer: (6.09 x 10^3 m) (0.0120 dm)
Question 24
24.
Perform the following calculation and follow sig fig rules for your answer: 0.817 g + 21.8920 mg + 12 kg = _____
Question 25
25.
Using the data table above, fill in the unknown values missing. Follow sig fig rules for each column. Show your work on scrap paper for submission at end of assessment.
Trial 3- Mass of Graduated Cylinder=
Trial 1- Mass of Unknown=
Trial 2- Mass of Unknown=
Trial 1- Density=
Trial 2- Density=
Trial 3- Density=
4
2
39000
40000.
40000
4 x 10^4
4.0 x 10^4
39704
Which of the following statements about compounds/compound formation are false? More than one answer may apply.
Sugar water is an example
Specific quantities of elements must be present
Have "new" properties
Carbon dioxide is an example
Color change may occur during formation
Can be heterogeneous or homogeneous
Solutions are heterogeneous mixtures
Copper is a pure substance, milk is a homogeneous mixture
Rubbing alcohol evaporating off your skin is a chemical change
By definition, an atom is the smallest particle of matter
Matter, mass and energy are conserved in a chemical reaction
