Physical Science Final

According to the law of conservation of mass, if a 15 kg wooden log was chopped into 45 pieces, how many kilograms of wood would remain?

• 675 kg

• 30kg

• 15kg

• 3kg

Tags

NGSS.MS-PS1-5

In a solution, the substance that is being dissolved is known as the _________________.

• solvent

• solution

• solute

• saturation

In a solution, the substance that is doing the dissolving is known as the ________________.

• solute

• solvent

• solution

• saturation

On the pH scale, a reading of ___________ represents acidic substances.

• 1-6.9

• 7

• 7.1-14

On the pH scale, a reading of ___________ represents basic substances

• 1-6.9

• 7

• 7.1-14

• 19°C

• 31°C

• 49°C

• 77°C

Tags

NGSS.MS-PS1-4

The half-life of Carbon-14 is 5,730 years. After 34,380years, how much would be left if you started with a sample of 3600 grams?

• 6 g

• 56.25 g

• 112.5 g

• .22 g

What is the atomic number of Sodium?

• 1

• 3

• 11

• 23

What is the mass number of Carbon?

• 8

• 12

• 6

• 2

How many energy levels are in a Neon atom?

• 8

• 20

• 10

• 2