Compare and contrast the movements of particles that make up solid, liquid and gaseous samples of matter.

One similarity between all mixtures and compounds is that both (1) are heterogeneous (2) are homogeneous (3) combine in a definite ratio (4) consist of two or more substances

If a chlorine atom gains or loses a valence electron, it becomes a charged particle called a/an ___ A. Flourine B. Chloride atom C. Ion D. Neutron

Why does the elements of group 17 appear as diatomic molecules?

How to write mole ratio of 4p + 5o2 = 2p2o5

After 15 minutes, 30 g of a sample of polonium-218 remain unchanged. If the original sample had a mass of 960 g, what is the half-life of polonium-218? Suppose you want to separate the leaves, acorns, and twigs from a pile of soil.

2. Seorang ibu perlu menyediakan satu hidangan kari daging dengan cepat untuk anaknya yang lapar. Langkah manakah yang berikut dapat membantu dia mencapai tujuan ini? (CL01, C2) A. Menggunakan periuk yang lebih besar B. Menambah banyak serbuk kari C.

Which of the following statements is not true? Question 4 options: When atoms have similar electronegativities, electrons are shared equally When electrons are shared equally, the molecule is called a nonpolar molecule.

Write the isotope symbol for two isotopes of the same element. What makes the isotopes different? How are they similar?

According to the periodic table, which element has an atomic number of 40? a. u b. ca c. zr d. np

3. Which word best fits with the Earth's day and night cycle a. Revolution b. Rotation C Orbit d. Axis