Chemistry Midterm Part 1

If a solution of borax and water is mixed with liquid glue, the result was a new substance a bit like silly putty or playdough. The substance was soft, stretchy, and could bounce. When the borax and liquid glue were combined, what type of change occured?

• physical

• chemical

• neither physical or chemical

Tags

NGSS.MS-PS1-2

hard, white, opaque, and flexible

• are properties

• are products

• are reactants

Tags

NGSS.MS-PS1-2

If we mix borax and glue to get flubber. When making flubber, we refer to the borax and glue as:

• pre-flubber

• product

• reactants

• ingredients

Flammability (a paper catching on fire) is an example of what property?

• Chemical property

• Physical property

Which is an example of a physical property?

• ability to react with hydrochloric acid

• state of matter (gas, liquid, solid)

• flammability

• ability to react with oxygen

Which is NOT a physical property?

• odor
• reacts with acid
• ability to conduct electric current
• hardness

Physical properties are

• properties that can be observed without changing the identity of the substance
• properties that describe how a substance changes into a completely different substance

Tags

NGSS.5-PS1-3

Which of the following is a chemical property?

• flexibility

• ability to rust

• color

• luster

Which type of property is the ability to conduct electricity?

• physical property
• chemical property

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties
• liquid properties
• real properties

Tags

NGSS.MS-PS1-2