unit exam 3

Write the following number in scientific notation: 0.000 000 008 44

• 8.44 x 10^-7
• 8.44 x 10^-9
• 8.44 x 10^-6
• 8.44 x 10^-8

Tags

CH.PS2.6

Write the following number in scientific notation: 23,800,000,000,000

• 2.38 x 10^13
• 2.38 x 10^12
• 2.83 x 10^13
• 2.38 x 10^14

Tags

CH.PS2.6

Calculate the following and write your answer in scientific notation: (6.1 x 10^6) x (2.2 x 10^5)

• 1.342 x 10^11
• 1.342 x 10^13
• 1.342 x 10^14
• 1.342 x 10^12

Tags

CH.PS2.6

How many cm are equal to 36.429 m?

• 3642.9
• 364.29
• 36429
• 3642

Tags

CH.PS2.6

How many g are equal to 0.764 kg?

• 7640
• 76.4
• 0.0764
• 764

Tags

CH.PS2.6

Balance the following chemical equation: K + ___ AlBr3 → ___ KBr + ___ Al

• 2, 6, 4, 2
• 3, 6, 6, 2
• 2, 4, 6, 2
• 2, 6, 6, 2

Tags

CH.PS1.2

CH.PS1.7

Balance the following chemical equation: ___ PbBr2 + ___ HCl → ___ PbCl2 + ___ HBr

• 2 PbBr2 + 2 HCl → 2 PbCl2 + 2 HBr
• 1 PbBr2 + 1 HCl → 1 PbCl2 + 1 HBr
• 1 PbBr2 + 3 HCl → 1 PbCl2 + 3 HBr
• 1 PbBr2 + 2 HCl → 1 PbCl2 + 2 HBr

Tags

CH.PS1.2

CH.PS1.7

Identify the type of chemical reaction for the following equation: 2NaBr + CaF2 → CaBr2 + CaBr2

• Double displacement reaction
• Decomposition reaction
• Combustion reaction
• Single displacement reaction

Tags

CH.PS1.2

Identify the type of chemical reaction for the following equation: 2C8H18 + 25O2 → 16CO2 + 18H2O

• Synthesis reaction
• Single displacement reaction
• Decomposition reaction
• Combustion reaction

Tags

CH.PS1.2

Identify the type of chemical reaction for the following equation: 2Na + Cl2 → 2NaCl

• Single displacement reaction
• Combination reaction
• Double displacement reaction
• Decomposition reaction

Tags

CH.PS1.2