Unit 2 BIG Test!

Question 1

What are the 3 pieces of an atom? What are their charges?

Answer 1

• Protons: Positive
• Neutrons: No charge/neutral
• Electrons: Negative

Question 2

What 2 pieces are at the center of the atom?

Answer 2

Protons and Neutrons

Question 3

How is a compound different from an element?

Answer 3

Compounds have 2 or more elements while an element only has one type of atom

Question 4

How is an ionic bond formed?

Answer 4

When a chemical bond occurs and an atom transfers or gives away an electron to a different atom

Question 5

How is a covalent bond formed?

Answer 5

When 2 atoms share electrons

Question 6

What is a solution?

Answer 6

They’re mixtures where the compounds are distributed evenly

Question 7

What is a solvent?

Answer 7

A substance that dissolves another substance

Question 8

What is a solute?

Answer 8

The substance that’s dissolved

Question 9

What specific ion does the pH scale measure?

Answer 9

H+ (Hydrogen)

Question 10

What is the scale between?

Answer 10

0-14

Question 11

What numbers is neutral on the pH scale?

Answer 11

7

Question 12

What is a reactant?

Answer 12

Substances that engage in chemical reactions

Question 13

What is a product?

Answer 13

Substance produced or transformed

Question 14

What is a catalyst?

Answer 14

substance that lowers the activiation energy of a reaction

Question 15

What is a substrate?

Answer 15

The reactant or substance that bonds to the enzyme

Question 16

Where do substrates bond?

Answer 16

Active site

Question 18

Should humans be considered Carbon based life forms? Why or why not?

Answer 18

Yes because the components that make up all life sustaining substances are
composed of primarily carbon