Measurements and Properties of Matter

Consider the following data set: 2.2 cm    2.25cm   2.113 cm   2.3 cm

(True value: 3.0 cm)

Which statement best describes the accuracy and precision of this data set?

• High accuracy, low precision

• High accuracy, high precision

• Low accuracy, low precision

• Low accuracy, high precision

How many significant figures are in the following number?

0.03800490

• 4

• 3

• 7

• 6

What would this number look like in scientific notation?

34,000,000 km

• 3.4 x 10⁶ km

• 3.4 x 10^-7 km

• 3.4 x 10⁷ km

• 0.34 x 10^-6 km

A farmer grows flowers in 3 different types of soil to see if they grow better.

What is the independent variable?

• Plant growth

• Type of soil

• Plant color

• Material of the pot

Tags

NGSS.MS-LS1-5

A farmer grows flowers in 3 different types of soil to see if they grow better.

What is the dependent variable?

• Plant growth

• Type of soil

• Plant color

• Material of the pot

Tags

NGSS.MS-LS1-5

Which is the best way to phrase your hypothesis?

• I think that the plants might grow differently.

• If the plant is in worse quality soil, then it will grow slowly.

• My plants are growing in soil differently.

• The plant might grow slowly, but it also might grow quickly.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The symbol for table salt is CO₂. This is carbon and oxygen bonded together.

This is an example of a(n)

• Mixture

• Solution

• Element

• Compound

Tags

NGSS.MS-PS1-1

A bag of sugar and only sugar is a(n)

• Pure Substance

• Solution

• Mixture

• Element

The lava in a lava lamp is bubbles of colored oil in water.

This is an example of a(n)

• Compound

• Pure Substance

• Homogenous Mixture

• Heterogenous Mixture

If the kinetic energy of particles surpasses the first level attraction between particles but not the second, it is likely a

• Solid

• Liquid

• Gas

• Mixture

Tags

NGSS.MS-PS1-4