Are new substances created when a chemical reaction happens?

Most times, due to the reaction

What elements make up Sodium Bicarbonate (Baking Soda) NaHCO3?

Sodium, Hydrogen, Carbon, Oxygen

Sodium, Hydrogen, Bicarbon, Oxygenate

The Law of Conservation of Mass states that: Matter...

constantly created and destroyed

The number of components will ______ than the number of products.

all the above are possible outcomes

In a reaction, what do you do with the mass of the container that the substances are in?

count it in the before and after

At the beginning of a chemical reaction, you have 235 Oxygen atoms. At the end of the experiment, you should have....

the same amount of oxygen atoms

no oxygen atoms, they were used up

While making popsicles, you use 10 grams of strawberries, and 50 grams of yogurt, stick a popsicle in it, and then let it freeze. When you weigh it, you notice the popsicle weighs 61.3 grams, when it should weigh 60 grams. What happened?

you did not account for the mass of the popsicle stick

gravity pulls more on a solid, increasing the weight

the strawberries condensed, creating more mass

yogurt adds mass when it is frozen

A cat with a mass of 4,000 grams gets a haircut and rinse. When measuring its mass after, it weighs 4,200 grams. How is this possible?

the water left on it adds 200 grams

it was lying down, so it increased the mass by 200 grams

they took the collar off of the cat that weighed 200 grams

it was later in the day, so gravity increased the mass

While conducting an experiment, 40 grams of ice is melted into water. The end result is 38 grams of water. Which explanation is illogical?

when water is condensed, the mass is greater resulting in a loss of mass when it turns into liquid form

some of the water could have sweated through the cup, being lost in the final measurement

the lost 2 grams were gasses trapped in the ice and was released into the atmosphere

the water could have been spilled or lost when transferring to measure mass

The following equation is balanced: 2HCl + 2Na 2NaCl + H2. Why isn't there a "2" coefficient by the Hydrogen product?

The subscript means there are 2 Hydrogen atoms

you do not need 2 Hydrogens to make the equations balanced

you have account for the other Hydrogen in the product

Hydrogen is exempt from the Law of Conservation

When looking at the products of a chemical reaction....

the number of atoms must be equal on both sides of the equation

The number of products must be equal ( 2 reactants, 2 products)

there must be Hydrogen in the answer since it is the basic element

must experience heat to create new products

Why is it important for a chemical equation to be balanced?

to ensure that the same amount of atoms are present before and after the reaction

to keep explosions from happening, which would cause unaccounted atom loss

so that nothing iodized incorrectly

so that the subscripts add up to the total of the coefficients

When balancing a chemical reaction...

you add coefficients to molecules

you can add the subscripts to the molecules

you can subtract from molecules

you can add coefficients and subscripts to molecules

Science Bowl 24-25

Authored by GABRIANNA MEREDITH

Science

6th Grade

NGSS covered

Used 9+ times

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45 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the chemical symbol for "Gold"?

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If we are given 100 grams of sodium, what would the equivalent be in kilograms?

10000

0.1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The common name for C6H12O6 is?

Air

Sugar

Calcium

Water

Tags

NGSS.MS-LS1-7

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the event of a chemical reaction, the overall mass...

stays the same

increases every time

decreases

only decreases when gasses are involved

Tags

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When solid sugar is added to liquid water, the sugar...

gets eaten by water

evaporates into the air

dissolves into the water

encases oxygen being released from the solution

Tags

NGSS.MS-PS1-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What elements make up Acetic Acid (vinegar) C2H4O2?

Acid, Carbon, Oxygen, Hydrogen

Carbon, Acetic, Oxygen, Hydrogen

Acetic Acid

Carbon, Oxygen, Hydrogen

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Are new elements created when a chemical reaction happens?

Yes, Always

Sometimes, if Oxygen is involved

Most times, due to the use of heat

No, never

Tags

NGSS.MS-PS1-5

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Science Bowl 24-25

What is the chemical symbol for "Gold"?

If we are given 100 grams of sodium, what would the equivalent be in kilograms?

The common name for C6H12O6 is?

In the event of a chemical reaction, the overall mass...

When solid sugar is added to liquid water, the sugar...

What elements make up Acetic Acid (vinegar) C2H4O2?

Are new elements created when a chemical reaction happens?

When mixing Liquids, the________ is the substance mixed in

Once a reaction happens, the new substance can be referred to as a...

Are new substances created when a chemical reaction happens?

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