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
Keith_Richards [23]
3 years ago
6

List some good ideas for Science Fair for Sixth Graders

Chemistry
1 answer:
grigory [225]3 years ago
4 0
You could test how high the soda shoots up when you drop mentos in different types of soda. i did it when i was in 6th grade
You might be interested in
A solution is prepared by adding 100 ml of 0.2 m hydrochloric acid to 100 ml of 0.4 m sodium formate. is this a buffer solution,
Firdavs [7]
Becoing itsodim fromate t will have  pb of 67

5 0
3 years ago
If 45.0 mL of ethanol (density = 0.789 g/mL) initially at 8.0 ∘C is mixed with 45.0 mL of water (density = 1.0 g/mL) initially a
strojnjashka [21]

Answer : The final temperature of the mixture is, 22.14^oC

Explanation :

First we have to calculate the mass of ethanol and water.

\text{Mass of ethanol}=\text{Density of ethanol}\times \text{Volume of ethanol}=0.789g/mL\times 45.0mL=35.5g

and,

\text{Mass of water}=\text{Density of water}\times \text{Volume of water}=1.0g/mL\times 45.0mL=45.0g

Now we have to calculate the final temperature of the mixture.

In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.

q_1=-q_2

m_1\times c_1\times (T_f-T_1)=-m_2\times c_2\times (T_f-T_2)

where,

c_1 = specific heat of ethanol = 2.42J/g^oC

c_2 = specific heat of water = 4.18J/g^oC

m_1 = mass of ethanol = 35.5 g

m_2 = mass of water = 45.0 g

T_f = final temperature of mixture = ?

T_1 = initial temperature of ethanol = 8.0^oC

T_2 = initial temperature of water = 28.6^oC

Now put all the given values in the above formula, we get:

35.5g\times 2.42J/g^oC\times (T_f-8.0)^oC=-45.0g\times 4.18J/g^oC\times (T_f-28.6)^oC

T_f=22.14^oC

Therefore, the final temperature of the mixture is, 22.14^oC

3 0
3 years ago
Which of the following types of radiation can be shielded by piece of paper or fabric
Keith_Richards [23]
There are 3 major types of radiation. The Alpha, Beta and Gamma radiation. It is the Alpha radiation that can be stopped by a piece of paper or fabric. Beta on the other hand can be stopped by plastic or a thin sheet of metal and Gamma by a piece of aluminum foil or lead. 
8 0
3 years ago
Copper is an example of a(n)
expeople1 [14]

copper is not a stone, copper is not a consumption resource, and copper is not renewable, that means that :

d. nonrenewable resource

Explanation:

A nonrenewable source is a source of economic value that cannot be immediately displaced by natural means on a level equal to its destruction. Most fossil fuels, such as oil, natural gas, and coal are estimated nonrenewable resources in that their use is not sustainable because their production takes billions of years.

7 0
3 years ago
Read 2 more answers
Which element comes from the greek word zinke?
Novay_Z [31]

Answer:

Zinc

The element was probably named by the alchemist Paracelsus after the German word Zinke (prong, tooth).

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • The equation for the reaction between copper and nitric acid is
    5·2 answers
  • How many electrons can exist in the second shell surrounding an atomic nucleus?
    5·1 answer
  • P
    10·1 answer
  • How many neutrons does Mn have?
    14·2 answers
  • Calculate the predicted density for calcium, ca, given the density of strontium, sr, (2.63g/cm3) and barium, ba, (3.65 g/cm3).
    8·1 answer
  • 1. What controls the cell?<br><br> 2. Calls can be many ____ and _____
    7·1 answer
  • What is the cornaviris?
    11·2 answers
  • The mass number of 3 isotopes of magnesium are 24,25,26.what is the mass number of the most abundant isotope of magnesium.​
    7·1 answer
  • Which of the following in the definition of control?
    8·1 answer
  • PLEASE help and quickly as possible it is one question that i need answered so that i can answer all my other questions PLEEEEAS
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!