Properties of Water, safety, scientific method, intro to Biochem

Question 1

All molecules are compounds

Accepted Answer

False

Question 2

On NFPA Diamond, what does the red square stand for?

Accepted Answer

Fire hazard

Question 3

How many total different elements present in this chemical formula?

Accepted Answer

3

Question 4

What type of bond results from the transfer of electrons between atoms?

Accepted Answer

ionic

Question 5

Which type of bond chemically bonds 2 or more water molecules together?

Accepted Answer

hydrogen bond

Question 6

How many atoms of oxygen are there?

Accepted Answer

6

Question 7

Which is NOT a proper lab procedure?

Accepted Answer

handle all the lab equipment

Question 8

On the NFPA Diamond, what information is represented on the yellow portion?

Accepted Answer

Stability/ Reactivity

Question 9

When your teacher entered the breakout channel in TEAMS, a group member was startled. Being startled is an example of

Accepted Answer

response

Question 10

The variable that is changed in an experiment

Accepted Answer

independent

Question 11

The body's ability to maintain relatively stable conditions compared to the external environment is

Accepted Answer

Homeostasis

Question 12

Why should an experiment be repeated?

Accepted Answer

to reduce the chance of error

Question 13

To run a controlled experiment on how sleep affects student test scores, you must

Accepted Answer

vary amount of sleep and keep all other variables the same

Question 14

Two or more atoms of the same element form a:

Accepted Answer

molecule

Question 15

How many neutrons will Nitrogen contain

Accepted Answer

7

Question 16

A well tested and scientifically accepted explanation.

Accepted Answer

Theory

Question 17

If a beaker is cracked, you should throw the beaker away in the trash can.

Accepted Answer

False

Question 18

Hydrogen bonds are responsible for which property of water?

Accepted Answer

All answers are correct.

Question 19

Which term best describes the chemical bonds between H and O atoms in a water molecule?

Accepted Answer

polar covalent

Question 20

What force allows water to move from the roots up to the stems and leaves of a plant?

Accepted Answer

capillary action

Question 21

How many total atoms of aluminum and oxygen are present in the chemical formula?

Accepted Answer

Al - 12 O - 18

Question 22

Attraction between molecules of different substances is called?

Accepted Answer

adhesion

Question 23

Which type of bond occurs when atoms share electrons?

Accepted Answer

covalent

Question 24

What should a student do if he finishes his lab?

Accepted Answer

Clean up the lab station.

Question 25

Describe the most important hazard(s) of this chemical.

Accepted Answer

Significant health hazards / Don't put it in water

Question 26

A hypothesis is

Accepted Answer

An educated guess yet to be proven

Question 27

Attraction between molecules of the same substance is called ...

Accepted Answer

cohesion

Question 28

What grade do you think you will get on this test?

Accepted Answer

A, B, C, D

Question 29

What property is caused by the strong attraction between water molecules?

Accepted Answer

surface tension

Question 30

Polar bears have thick white fur in the arctic that enables them better suited to survive the environment, an example of

Accepted Answer

Adaptation

Properties of Water, safety, scientific method, intro to Biochem

Questions 30

Properties of Water, safety, scientific method, intro to Biochem

Questions 30