semester retest

Which of the following is not a compound?

• FeO

• CO

• H₂O₂

• Fe

Tags

NGSS.MS-PS1-1

Select all of the following that are compounds.

• NaF

• Ag

• Pb

• CO₂

• H₂

Tags

NGSS.MS-PS1-1

Pottasium Floride, KF, is -

• a compound of two elements

• a mixture of two compounds

• a pure atomic substance

• a pure chemical substance

Tags

NGSS.MS-PS1-1

Which of the following is an example of a chemical change?

• dissolving sugar

• crushing a can

• frying an egg

• melting gold

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is NOT a chemical change

• Sugar dissolving in water

• Fire burning paper

• Souring milk

• Rusting metal

Tags

NGSS.MS-PS1-2

The element iron (Fe) is a metal and the element chlorine (Cl) is a nonmetal. Based on the physical properties of metals and nonmetals, which of the following is true?

• Iron is brittle while chlorine is not

• iron is ductile while chlorine is not

• Chlorine is more metallic than iron

• Chlorine is a better conductor than Iron

The table shows the characteristics of the element sulfur (S).

Sulfur (S) is most likely -

• a metal

• a metalloid

• a nonmetal

• an alloy

Tags

NGSS.MS-PS1-1

Metalloids such as silicon and boron -

• always conduct electricity

• may contain characteristics of metals and nonmetals

• always have a metallic luster and are malleable

• are all brittle and ductile

Billy is trying to figure out what type of wood to use for building a model boat. He has a block of wood with a volume of 8.0 cubic centimeters (cm³) and a mass of 4.0 grams (g). What is the density of the block of wood in g/cm³ to the nearest tenth?

• 0.5

• 2.0

• 4.0

• 32.0

Curtis needs to determine the relative densities of four different liquids. He measures the volume of each liquid using a graduated cylinder, and measures the mass of each liquid using a balance. Then he records the measurements in the table.

Which of the liquids has the greatest density?

• liquid A

• liquid B

• liquid C

• liquid D

Tags

NGSS.MS-PS1-2