Explain the difference between a molecular element and a molecular compound.

Explain the difference between a molecule and an ionic compound.

Explain the difference between an element and a compound.

How are ionic bonds and van der Waals forces similar? How are they different?

What is the difference between an element and a compound?

What is the difference between a molecule and a compound?

What is the difference between a molecular element and an atomic element? List the elements that occur as diatomic molecules.

Lithium belongs to the ________ group of the periodic table.

A) alkali metal

B) halogen

C) alkaline earth metal

D) noble gas

Change the infinitive to active if it is passive or into passive if it is active: exspectare

Fill in the following table to fully describe an atom's subatomic particles.

$$\begin{matrix} \text{Particle} & \text{Position in the atom} & \text{Charge} & \text{Mass}\\ \text{Proton}\\ \text{Neutron}\\ \text{Electron}\\ \end{matrix}$$

A 1.10-g sample contains only glucose ($C_6H_{12}O_6$) and sucrose ($C_{12}H_{22}O_{11}$). When the sample is dissolved in water to a total solution volume of 25.0 mL, the osmotic pressure of the solution is 3.78 atm at 298 K. What is the mass percent composition of glucose and sucrose in the sample?

Define radioactivity. If an element has three isotopes, which of them (the lightest, the one with an intermediate mass, or the heaviest) is most likely to be a radioisotope, and why?

What do you need to know about the sine or cosine functions to graph them or write their equations? Talk with your team and write a list of all of the attributes of a sine or cosine function that you need to know to write an equation and graph it.

Find the $4 \times 4$ matrix $A=\left[a_{i j}\right]$ whose entries satisfy the stated condition. (a) $a_{i j}=i-j$. (b) $a_{i j}=(-1)^{1} i j$. (c)

$$a_{i j}=\left\{\begin{aligned} 0 &|i-j| \geq 1 \\-1 &|i-j|<1 \end{aligned}\right.$$

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