1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nexus9112 [7]
3 years ago
5

ITEMBANK: Move to Bottom

Chemistry
1 answer:
nadezda [96]3 years ago
8 0

100%

Physical Property


Color

Density

Boiling Point

Malleability

Temperature

Chemical Property


Flammability

Reactivity with an acid

Reactivity with a base

<em>(here are the other answers i got a 100% so they all should be right)</em>

1. In an electrically neutral atom of any element, there are equal numbers of


A) protons and neutrons.  

B) electrons and protons.

C) electrons and neutrons.  

D) atomic number and atomic mass.

2. According to theories concerning the origin of life, the atom shown is a likely choice for the basic element of all livings things because it


A) is small and unstable.  

B) is relatively stable and can form four covalent bonds.  

C) forms four ionic bonds with other elements and itself.  

D) is large and takes up enough space to fill the structure of a cell.

3. When Dmitri Mendeleev first developed the periodic table, one of the most important features that he introduced was starting a new row at a certain point. What factor was most important to Mendeleev in knowing when to end a row (period) and start a new one?


A) The reactivity of the elements changed drastically.  

B) The state of the elements went from solid to liquid.  

C) The boiling point of the elements decreased dramatically.  

D) The size of the elements jumped from very large to very small.

4. Which word or group of words is represented by the word "period" in the term Periodic Table?


A) Group  

B) Family  

C) Energy Level  

D) Valence Electrons

5. Members of the alkaline earth elements have several things in common. They are


A) nonmetals and are nonreactive.  

B) metals with two valence electrons.

C) metals that are not very reactive.  

D) metalloids with two valence electrons.

6. During a reaction, a halogen chemically combines with a Group 1 element to form a compound. How does this reaction occur, based on the atomic structure of each element?


A) A halogen atom loses an electron to an atom of a Group 1 element.  

B) A halogen atom gains an electron from an atom of a Group 1 element.  

C) A halogen atom loses two electrons to an atom of a Group 1 element.  

D) A halogen atom shares an electron with an atom of a Group 1 element.

7. Mendeleev noticed that if he organized the elements by atomic weight certain patterns emerged. For instance, elements in the same group (family) appeared to have the same

7

A) valence.

B) melting point.  

C) isotopic ratio.  

D) number of neutrons.


8. Sodium has an atomic number of 11 and has a net charge of 0. When sodium combines with chlorine, it has a net charge of +1. Why?


A) Sodium loses a negative electron when forming chemical bonds.

B) Sodium gains a + proton when forming chemical bonds.  

C) Sodium loses a + proton when forming chemical bonds.  

D) Sodium shares a negative electron with chlorine.

9. The element sodium has an atomic number of 11 and a mass number of 23. How many protons, neutrons, and electrons does one atom contain?


A) 11p+, 11e-, 12no

B) 11p+, 12e-, 11no  

C) 11p+, 11e-, 23no  

D) 12p+, 12e-, 11no

10. Using the chart above, determine which statement would be FALSE.


A) Carbon would have 6 protons.  

B) Hydrogen would have 0 neutrons.  

C) Each element would have a mass number of 12.

D) Neon is the element with an atomic number of 10.

11.Consider this row in the periodic table of elements. As we move from left to right, across the row, the elements


A) change from nonmetals to metals.  

B) change from metals to nonmetals.  

C) start as gases but end as solids.  

D) show a decrease in atomic mass number.

12.Consider the elements in the periodic table. The stair-step line between the pink squares and the yellow squares separates the ___________ (pink) from the _____________ (yellow).


A) gases; solids  

B) metals; nonmetals  

C) nonmetals; metals  

D) reactive; non reactive

13. C-14 is an isotope of the element carbon. How does it differ from the carbon atom seen here?


A) C-14 has two more protons.  

B) C-14 has two more neutrons.  

C) C-14 has a larger atomic radius.  

D) C-14 has two additional valence electrons.

14. Elaborate what knowing that carbon-14 has an atomic number of 6 tells us about the atom.

A) Carbon-14 contains 6 baryons, 7 prions, and 8 neutrons.  

B) Carbon-14 contains 7 electrons, 7 protons, and 7 quarks.  

C) Carbon-14 contains 6 electrons, 6 protons, and 8 neutrons.  

D) Carbon-14 contains 8 electrons, 6 photons, and 6 neutrons.

15. Many people believe that the atomic number of the atom is the number of electrons in the atom. Describe when this is the case.


A) As the atom absorbs photons the electrons excite and produce unique emission spectrum.  

B) Through radioactive decay the electrons and neutrons form unique atomic number isotopes.  

C) When the atom is neutral and the number of electrons and the number of protons are equal.

D) Whether the atom is neutral or charged the number of electrons is always a unique identifier.



You might be interested in
I'm taking boy bsf applications submit your applications here!
Anestetic [448]

Answer:

I can be your boy bsf : )

Explanation:

im also 15 , chill, takes jokes rlly well(even if it is sarcastic),bit shy sometimes, and I’ll support you all the way

6 0
2 years ago
Read 2 more answers
PLEASE HELP GUYS PLEASE!!!! I will LOVE WHOEVER HELP<br> ME FOREVER
Vladimir79 [104]

Answer:

B. It is highly flammable.

Explanation:

Chemical properties deal with how the substance will behave when brought into contact with other substances, and usually have to do with it undergoing some kind of reaction. Flammability is a chemical property.

Density, melting point, and color are all considered physical properties.

3 0
3 years ago
Read 2 more answers
Choose the correct statement regarding the relative size of atoms:
Sonbull [250]

Answer:

The atoms on left side are larger than the atoms on the right side of the periodic table because those on the right have more proton's.

Explanation:

As we travel along a period in a periodic table then the atomic radii decreases

This is because as we travel along a period we have that the atomic number of the atoms increases which means the the number of proton's increased

But the electron's add to the same outer shell throughout the period , which means the effective nuclear charge increases which pulls the outer electrons toward's the nucleus and the size decreases.

Therefore the atoms on left side are larger than the atoms on the right side of the periodic table because those on the right have more proton's.

6 0
3 years ago
We gave an object with a density of 620 g/cm^3 and a volume of 75cm^3. What is the mass of this object?
Hitman42 [59]
d=\frac{m}{V} \ \ \ \Rightarrow \ \ m=dV\\\\&#10;d=620\frac{g}{cm^{3}}\\&#10;V=75cm^{3}\\\\\&#10;m=620\frac{g}{cm^{3}}*75cm^{3}=46500g
6 0
3 years ago
Which of these factors influences air temperature?
Ksju [112]

Answer:

D

Explanation:

3 0
3 years ago
Other questions:
  • _________ refers to the total energy of a system.
    5·2 answers
  • What is true about a carbonated soft drink in relation to acids, bases, solutes, and solvents?
    15·1 answer
  • In which state do molecules have the highest kinetic energy? in the liquid state in the solid state in the gaseous state during
    15·2 answers
  • How do plants store glucose?
    7·1 answer
  • How long will it take for half of Bismuth-214 to decay to lead? (Refer to the Uranium-238 decay chain series.)
    13·1 answer
  • Which statement correctly describes the conductivity of the specified material?
    12·1 answer
  • Consider the energy diagram below.
    8·1 answer
  • In the first step in the life cycle of a<br> star, it is called a:
    10·1 answer
  • Are pterosaurs more closely related to turtles or to crocodilians? Explain your answer.
    9·1 answer
  • What color would a solution that contains more OH- moles than H3O+ moles cause a phenol red indicator to turn?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!