MAI: Chemistry Lessons 5-10

Question 1

Cupcakes are what type of substance?

Accepted Answer

Compound

Question 2

What is the atomic mass of an element with 13 protons and 17 neutrons

Accepted Answer

30

Question 3

Particles that have a negative charge:

Accepted Answer

electrons

Question 4

The "Ice" drink we used in the Distillation lab is what type of substance?

Accepted Answer

Heterogeneous mixture

Question 5

Chromatography technique separates mixtures by physical means.

Accepted Answer

True

Question 6

Use your periodic table...Which FAMILY did the alginate react?

Accepted Answer

Alkaline Earth Metals

Question 7

Distillation is used to separate compounds.

Accepted Answer

False

Question 8

The "period" on the PT of E tells us the

Accepted Answer

energy levels/shells of the element

Question 9

Large molecules composed of long chains of atoms in a repeating pattern is called:

Accepted Answer

polymers

Question 10

When using the glowing stick to test for oxygen, the glow or embers would:

Accepted Answer

reignite or glow brighter

Question 11

Chemical reactions that produce TE to be released:

Accepted Answer

Exothermic

Question 12

Chemical reactions that absorb TE:

Accepted Answer

Endothermic

Question 13

Particles that have a positive charge:

Accepted Answer

protons

Question 14

Chemical reactions involve the rearrangement or transfer of which part of the atom?

Accepted Answer

electrons

Question 15

Electrolysis of water broke the bonds of hydrogen and oxygen using

Accepted Answer

electrical current

Question 16

where are electrons found?

Accepted Answer

in the cloud

Question 17

Mixtures can be separated by physical means because

Accepted Answer

they are not chemically bonded

Question 18

What type of bond is associated with water?

Accepted Answer

Polar Covalent

Question 19

How many atoms of Na are present in NaCl?

Accepted Answer

1

Question 20

In order to find the number of neutrons present in an element you:

Accepted Answer

subtract the atomic # from the atomic mass

Question 21

How do you find an elements number of electrons?

Accepted Answer

the atomic number

Question 22

How many TOTAL atoms are present in KCl

Accepted Answer

2

Question 23

Polymers atoms form

Accepted Answer

in a repeating pattern

Question 24

The number of protons and electrons are the same as the atomic mass?

Accepted Answer

No

Question 25

Sodium alginate is a type of

Accepted Answer

polymer

Question 26

The periodic table o elements is organized based on

Accepted Answer

increasing atomic number

Question 27

Families of elements have the same number of valence electrons.

Accepted Answer

True

Question 28

How do you find an elements number of protons?

Accepted Answer

atomic #

Question 29

Compounds are chemically bonded and cannot be separated by physical means.

Accepted Answer

True

Question 30

Which type of bond is the strongest?

Accepted Answer

Ionic

Question 31

Valence electrons can be located

Accepted Answer

the outer shell of an atom

Question 32

There was more hydrogen produced than oxygen during electrolysis because

Accepted Answer

there are more hydrogen atoms present in water molecules

Question 33

The stronger the bond, the more

Accepted Answer

energy needed to break the molecule apart

Question 34

Atoms containing different amount of neutrons are called:

Accepted Answer

isotopes

Question 35

What type of substance is Fe (Iron)?

Accepted Answer

Pure Substance

MAI: Chemistry Lessons 5-10

Questions 35

MAI: Chemistry Lessons 5-10

Questions 35