Unit 1 Review*

Matter is defined as anything that occupies space and has

• shape
• odor
• mass
• color

If a student reacts 24 g of magnesium with oxygen gas and the final product of magnesium oxide weighs 40g. How much oxygen was reacted?

• 64 g
• 840 g
• 16 g
• 24 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which substance cannot be decomposed by a chemical change?

• N₂O
• H₂O
• Ne
• HF

Tags

NGSS.MS-PS1-2

Which statement describes a chemical property of iron?

• Iron is a shiny metal
• Iron can be flattened into sheets
• Iron can be drawn into a wire.
• Iron combines with oxygen to form rust

Tags

NGSS.MS-PS1-2

The diameter through the equator of Jupiter is about 143,000 kilometers. What is this distance written in scientific notation?

• 143 x 10³ km
• 1.43 x 10³ km
• 1.43 x 10⁵ km
• 143 x 10⁵ km

Tags

NGSS.MS-ESS1-3

Which type of change must occur to form a compound?

• Nuclear
• Chemical
• Physical
• Phase

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which terms are used to identify pure substances?

• an element and a compound
• a solution and a compound
• an element and a mixture
• a solution and a mixture

Which of the following represents a mixture?

• NaCl (aq)
• NaCl (s)
• NaCl (g)
• NaCl (l)

Which measurement contains a total of three significant figures?

• 0.010 g
• 0.01 g
• 0.01000 g
• 0.0100 g

Which diagram represents a graduated cylinder?

• A
• B
• C
• D