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Compounds and mixtures

Last updated 3 months ago

46 questions

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9. Which element's symbol is F?

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This is a picture of a(an) __________, the building block of matter.

compound

atom

element

mixture

In the picture above, water is an example of 

an atom

an element

a compound

a mixture

all of the above

Silver is found on the periodic chart.  Therefore, it must be a (an)

element

compound

mixture

all of the above

How many molecules are there in the formula 4C2H3?

4

2

20

3

Use the information below to answer the following question.
N = nitrogen
Cl = chlorine
H = hydrogen
C = carbon
Na = sodium
What elements make up the molecule NaCl?

sodium and carbon

nitrogen and carbon

nitrogen and chlorine

sodium and chlorine

What does the picture above represent and why?

compounds because there are 3 different colors

elements because they are only connected to other atoms of the same color

elements because there are 3 different colors

compounds because there are more than one atom in each model

The picture above is an example of a(an)

atom

compound

element

These particles are most likely in what state?

Solid

Liquid

Gas

All of the above

Two or more atoms joined together is called a Molecule. 

True

False

Liquid does....

change shape and change volume

change shape but not volume 

not change shape but change volume

not change shape and not change volume 

Which one of which of the following is not a part of an atom?

Proton

Molecule

Neutron

Electron

A particle in the nucleus with no electrical charge is known as a(n)

atomic number

isotope

electron

Neutron

Isotopes are atoms of the same element with the same number of protons and

a different number of electrons

a different number of molecules

a different number of neutrons

the same number of neutrons

In an element with a neutral charge, the atomic number is equal to the number of

(a )atoms

(b) nucleus

(c) protons

(d) electrons

(e) both c and d are correct

An atom becomes negatively charged by

gaining an electron

losing an electron

losing a proton

gaining a neutron

What is the maximum number of electrons that are allowed on the second shell/orbit?

9

7

8

3

An atom can be identified by the number of_______________in the nucleus of an atom.

protons

electrons

Neutrons

Potassium has an atomic number of 19 and a mass number of 39. So, it has  _________________neutrons.

19

18

20

21

Which of the following would be an isotope of aluminum?

Atom A: mass number=24, atomic number=13

Atom B: mass number=24, atomic number=12

Atom C: mass number=26, atomic number=14

Atom D: mass number=22, atomic number=11

Which statement is true about the Periodic Table?

The Periodic Table allows you to easily compare the properties of one element to another

Each horizontal row of the Periodic Table is called a group

Each vertical column of the Periodic Table is called a period

All of the above are correct

In the Periodic Table, the vertical columns that extend down the Periodic Table are called

periods

groups

classes

Which scientist is credited with inventing the Periodic Table?

Gregor Mendel

Watson and Crick

Albert Einstein

Dimitri Mendeleev

In the Modern Periodic Table, the elements are arranged in order of

increasing mass

increasing atomic volume

increasing atomic number

the alphabet

2. What is the atomic number for Beryllium? 

40

5

107

4

3. Which element has the symbol B? 

Beryllium

Boron

Bromine

Borhium

4. What is the symbol for Fluorine? 

f

F

Fl

Fo

7. What is the atomic number of Bromine?

5

3

35

83

17. Which group can you find Gold? 

6

11

1

16

20. What is the symbol for Tin?

Sn

S

T

Ti

Whenever you are in the classroom or laboratory, you should wear

sandals

open toe shoes

closed toe shoes

no shoes

The correct way to move about the classroom or laboratory is to 

run

dance

walk 

skip

Eyeglasses do not provide as much protection as

a face shield

splash-proof goggles

safety glasses

all of these

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Question 46

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A solution is: 

A

B

C

D

Which answer best defines a solvent?

A

B

C

D

A mixture is best defined as:

A

B

C

D

Which answer best defines a solute?

A

B

C

D

Which answer best defines solubility?

A

B

C

D

Which answer best defines an alloy?

A

B

C

D

CS 
  
Which elements are in the chemical formula shown above?

A Cesium only 

B Copper and Selenium

C Carbon and Sulfur 

D Carbon and Silicon

  CS
How many different elements are in a compound with the formula IF7?

A 1 element

B 2 elements 

C 7 elements

D 8 elements 

  
Co
5. Which elements are in the formula shown above?

A Copper only 

B Cobalt only 

C Carbon and Oxygen 

D Carbon and Osmium

  
6. Which of the following substances is considered a compound?

A CO

B O3  

C Cl2 

D  Cs

  
How many different elements are in a compound with the formula H2CrO4?

A 1 element  

B 2 elements 

C 3 elements

D 4 elements 

  
How many different elements are in a compound with the formula C5H11NO2S?
A 3 elements 
B 4 elements 
C 5 elements 
D 6 elements 

A 3 elements

B 4 elements

C 5 elements

D 6 elements

  
Which elements are in the chemical formula shown above?

A Potassium only 

B Polonium only  

C Phosphorus and oxygen 

D Potassium and oxygen