Unit 5 Study Guide

A _______________ change alters how matter looks but doesn't create new substances.

• color

• chemical

• state
• physical

• texture

A _______________ change creates new substances with different properties.

• chemical
• physical

• heat

• States of Matter

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A(n) _______________ is an educated guess about what might happen in an experiment.

• hypothesis
• prediction

• question

• guess

The ____________ variable is what you measure in response to changes.

​ ​

• independent

• dependent

• control group

Tags

NGSS.MS-PS1-2

Scientific ____________ must be measurable and reliable. Fill in the blanks using words from the word bank above.

​ ​ ​

• hypothesis

• investigation
• question
• evidence

Tags

NGSS.MS-PS1-2

NGSS.MS-PS2-2

Physical Changes (Check all that apply):

• Crushing aluminum cans

• Ice melting

• Cutting paper

• Dissolving salt

• Bread toasting

Tags

NGSS.MS-PS3-4

During a chemical reaction in a closed system, the total mass will _______________. Fill in the blank with "increase" or "stay the same" (Hint: Conservation of Mass).

Tags

NGSS.MS-PS1-5

When salt dissolves in water, the total mass will _______________________. Fill in the blank with "increase" or "stay the same" (Hint: Conservation of Mass).

Tags

NGSS.MS-PS1-5

When water evaporates, the total mass in a closed system will ____________________. Fill in the blank with "increase" or "stay the same" (Hint: Conservation of Mass).

Tags

NGSS.MS-PS1-5

If an experiment's results don't support your hypothesis, you should:

• Ignore the results

• Change the data

• Use the data to form new questions

• Give up on the experiment

Tags

NGSS.MS-LS1-5