Isaac Unit 15A - Chem H Rev

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

Tags

CCSS.8.EE.A.4

How many significant figures does the following number have: 100.00210

• 7
• 5
• 10
• 8

Tags

CCSS.8.EE.A.4

How many significant numbers does the following number have? 246.32

• 2

• 3

• 4

• 5

How many significant figures does the following number have? 5,000.

• 1

• 2

• 3

• 4

How many significant figures does the following number have? 0.47

• 1

• 2

• 3

• 4

You know 1000 mg = 1 g.  Convert 2.5 grams into milligrams.

• 25 mg
• 25,000 mg
• 250 mg
• 2500 mg

Tags

CCSS.6.RP.A.3D

How many kilograms of calcium are there in 173 pounds of calcium? (1 lb = 454 g; 1 kg = 1000 g)

• 1.10 kg

• 78.5 kg

• 110 kg

• 78500 kg

Tags

CCSS.6.RP.A.3D

The nucleus of an atom contains which subatomic particles?

• protons and electrons

• protons and neutrons

• electrons and neutrons

• protons, electrons, and neutrons

Tags

NGSS.MS-PS1-1

Particles in an atom that are neutral and have no charge are 

• negatrons 
• electrons 
• neutrons 
• protons 

The atomic number is equal to _.

• the number of protons and electrons
• the number of neutrons only
• the total number of protons and neutrons
• the number of protons neutrons and electrons