Chemistry (Cengage) Intro + 1.1

Question 1

When a batter goes dead, what does that mean?

Question 2

What is the lead storage battery in a car, and how does it work?

Question 3

What does a lead storage battery contain?

Question 4

How can you avoid exploding a car when you jumpstart it?

Question 5

What is gasoline made of, and how does it furnish energy in a vehicle?

Question 6

What is the vapor that exits the exhaust pipe, and why does it case air polution?

Question 7

What’s an STM?

Answer 7

It’s a Scanning Tunnel Microscope that uses an electron current and a tiny needle to probe the surface of a substance to show us atoms.

Question 8

What does macroscopic mean?

Answer 8

Macroscopic refers to the world of macro-sized objects

Question 9

What does microscopic mean?

Answer 9

Microscopic refers to the world of micro-sized substances, which are unable to be seen by the naked eye.

Question 10

Hydrogen and oxygen exist as what in nature?

Answer 10

They exist as diatomic atoms

Question 11

What are the steps of the scientific method?

Answer 11

1. Making observations (collecting data)
2. Suggesting a possible explanation (formulating hypothesis)
3. Doing experiments to test the possible explanation (testing the hypothesis)