Addition

What is the result of adding the atomic numbers of Hydrogen and Helium?

• 3

• 4

• 5

• 6

In a chemical reaction, if you add more reactants, what generally happens to the rate of reaction?

• It increases

• It decreases

• It remains the same

• It stops

Tags

NGSS.HS-PS1-5

When you add heat to a solid, what is the process called when it turns into a liquid?

• Evaporation

• Condensation

• Melting

• Sublimation

Tags

NGSS.MS-PS1-4

What is the sum of the coefficients in the balanced equation @@ ext{C}_6 ext{H}_{12} ext{O}_6 + 6 ext{O}_2 ightarrow 6 ext{CO}_2 + 6 ext{H}_2 ext{O}@@?

• 24

• 12

• 18

• 30

Tags

NGSS.HS-LS1-7

Adding which of the following elements to iron makes it stainless steel?

• Carbon

• Chromium

• Nickel

• Copper

What happens to the boiling point of water when you add salt to it?

• It increases

• It decreases

• It remains the same

• It evaporates

In genetics, what is the result of adding a nucleotide to a DNA sequence?

• Deletion

• Insertion

• Substitution

• Translocation

Tags

NGSS.HS-LS3-2

What is the effect of adding a catalyst to a chemical reaction?

• It increases the activation energy

• It decreases the activation energy

• It changes the products

• It changes the reactants

When you add an acid to a base, what is the resulting reaction called?

• Oxidation

• Reduction

• Neutralization

• Hydrolysis