Chem Comm Unit 1B

Question 1

A green liquid with a thin film on the bottom is observed in a beaker. It is likely...

Accepted Answer

a suspension

Question 2

A cation is...

Accepted Answer

a positively charged atom.

Question 3

What is the volume of an object if water in a grad cylinder is displaced from 50mL to 87mL?

Accepted Answer

37 mL

Question 4

A clear, green liquid with no layers or settling is observed in a beaker. It is most likely...

Accepted Answer

a solution

Question 5

Which subatomic particles are found in the nucleus?

Accepted Answer

Protons and Neutrons

Question 6

What is the charge for Strontium?

Accepted Answer

2+

Question 7

An educated guess...

Accepted Answer

Hypothesis

Question 8

Which of the following accurately depicts the density of water from least to greatest?

Accepted Answer

gas, solid, liquid

Question 9

An anion is...

Accepted Answer

a negatively charged atom.

Question 10

What is an indicator of a chemical reaction?

Accepted Answer

All of the above.

Question 11

Which of the following is a compound?

Accepted Answer

Carbon monoxide

Question 12

Which of the following is NOT a polyatomic ion?

Accepted Answer

Cl-

Question 13

Which of the following is a diatomic element?

Accepted Answer

Oxygen

Question 14

What is the charge for oxygen?

Accepted Answer

2-

Question 15

The test used to identify a colloid is known as...

Accepted Answer

Tyndall Effect

Question 16

Which is the lightest subatomic particle?

Accepted Answer

Electrons

Question 17

What is the total number of atoms in H3PO4?

Accepted Answer

8

Question 18

How many electrons does tin have in order to be neutral?

Accepted Answer

50

Question 19

An example of a NON-metal is...

Accepted Answer

Chlorine

Question 20

A mixture that is not uniform throughout is considered to be...

Accepted Answer

Heterogeneous

Question 21

All of the following are physical properties EXCEPT...

Accepted Answer

Combustability

Question 22

Which symbol does NOT represent an ion?

Accepted Answer

Na

Question 23

Protons and electrons have a positive charge.

Accepted Answer

FALSE

Question 24

The orbital shell where all bonding occurs in an element is known as...

Accepted Answer

Valence Shell

Question 25

A cloudy, green liquid with no layers or settling is observed in a beaker. It is likely...

Accepted Answer

a colloid

Question 26

K+ is an example of an anion.

Accepted Answer

False

Question 27

What is the charge of an ion with 17 protons and 13 electrons?

Accepted Answer

+4

Question 28

An ion is an atom that has either gained or lost a(n)...

Accepted Answer

electron

Question 29

An idea that has been tested multiple times and supported without contradictory results.

Accepted Answer

Theory

Question 30

How many protons are in the nucleus of a sodium atom?

Accepted Answer

11

Question 31

Density is a physical property of matter that depends upon which 2 measurements?

Accepted Answer

Volume/Mass

Chem Comm Unit 1B

Questions 31

Chem Comm Unit 1B

Questions 31