HW_HChem201516

090815

  1. List five occupations that are related to chemistry.

090915

  1. the following footwear is best in the lab
  1. sandals
  2. open-toed shoes
  3. closed-toed shoes
  4. shoes appropriate for the weather
  1. personal eyeglasses provide as much protection as
  1. a face shield
  2. safety glasses
  3. splash proof chemical goggles
  4. none of the above

091015

4. hand out worksheet.

091415

lab report

091515

the sale price of a phone was $150, which was only 80% of normal price, what was the normal price?

091615

Comparing the difference between mass and weight

091715

study

091815

study

092115

study

092215

study

092315

Describe the difference between mass and weight?

092415

1. 5.21 cm =_____ m

2. Which of the following is the largest unit?

A, millimeter B, micrometer C, meter D, decimeter E, kilometer

20150928

80 s = ____ ms

6000 mg = ___ kg

5 ml = ___ ul

20150929

wood burned in fireplace is physical or chemical change?

20150930

Describe the classification of matter

10052015

Which of the following terms correctly applies to a molecule of CO2?

a.triatomic, heteroatomic

b.polyatomic, diatomic

c.triatomic, homoatomic

d.diatomic, heteroatomic

10062015

100 k = _____ 0C

50 0F = _____ 0C

101515

Get the scientific notation for the following calculation:

A, 30 x 5

B, 2 x 105 x(8 x 103)

C, 5 x 103/ (8 x 106)

101915

Apply the SF rules, keep the proper SF in these calculations:

20.04 ÷ 2.0 =?

12.68 + 34. 6 = ?

102115

The density of zinc is 7.13 g/cm3. What is the mass in kilograms of a 125 cm3cylinder of zinc?

102215

Find what percentage of 65 is 60.

A 10.0 cm3 sample of copper has a mass of 89.6 g. What is the density of copper?

102615

How many SF in 350070, and 0.00600800?

102815

Describe the group and period in PT.

110215

Baby Element book project. Due date: 11/11-11/12/15

111015

Identify each statement as describing a

1) proton 2) neutron3) electron

A. Found outside the nucleus.

B. Has a positive charge.

C. Is neutral.

D. Found in the nucleus.

111615-111715

Indicate the number and type of orbitals in each of the

following:

3s subshell

3d subshell

n = 3

111815

State the number of valence electrons for element Nitrogen, sodium, and aluminum.

111915

What do lithium and sodium have in common?

112015

study

112315

Write the electron configuration for following elements:

Aluminum, magnesium, and chlorine