Unit 2: Matter

Question 1

Atoms

Answer 1

building blocks of matter “stuff.”

Question 2

Elements

Answer 2

different types of atoms, pure chemical: Protons, electrons, neutrons, unique characteristics EX. NA-sodium solid deadly, CL-Chloride gas deadly.

Question 3

Compounds

Answer 3

Nacl solid yummy elements together, 2 or more elements bonded together, CO2.

Question 4

Properties of matter.

Answer 4

PHYSICAL: smell, color, shape, boiling pt, melting pt. CHEMICAL: reactivity and fllamability.

Question 5

Physical changes.

Answer 5

No changes of compound.

Question 6

Chemical Changes.

Answer 6

different compunds afterwards.

Question 7

IV- Independent Variable

Answer 7

the characteristic that you can change. EX. the amount of Miracle Gro.

Question 8

DV- Dependent Variable

Answer 8

what you measure and you hope changes as a result of the IV. EX. # of tomatoes.

Question 9

Control

Answer 9

group that does not receive the IV. EX. group that has 0 mg Miracle Gro.

Question 10

Constant —->

Answer 10

same for all groups EX. type of tomato plant.

Question 11

EX. of IV

Answer 11

Gas production of baking soda and vinegar change amt. of baking soda. - change amt. of vinegar, change amt. of time.