Chemical Reactions III

Question 0

Physical property ex

Answer 0

Melting point
Viscosity
Density
Solubility 
Hardness
Luster
Malleability 
Ductility

Question 1

Physical property

Answer 1

Characteristic that can be observed without changing the identity of the substance

Question 2

Chemical property

Answer 2

Characteristic that’s observed during a reaction and identity/chemical composition of the substance changes

Question 3

Chemical properties ex

Answer 3

Flammability
pH
Reactivity
Toxicity

Question 4

Physical change

Answer 4

A usually reversible change in the physical property of a substance (change in state or phase)

Cutting grass

Question 5

Chemical change

Answer 5

An irreversible chemical reaction involving the rearrangement of atoms and a change in their chemical properties (chemical reaction)

Question 6

Chemical change ex

Answer 6

Burning
Digesting
Cooking
Rust

Question 7

Signs of a chemical change

Answer 7

Color change
Precipitation
Gas
Temp change

Question 8

Catalyst

Answer 8

Increases rate if chemical reaction

Question 9

Inhibitor

Answer 9

Slows or prohibits a chemical reaction

Question 10

Equilibrium

Answer 10

A chemical reaction in which the forward and reverse reactions occur at equal rates